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eclipse / platform / eclipse.platform.swt.git / refs/tags/v3136a / . / bundles / org.eclipse.swt / Eclipse SWT / win32 / org / eclipse / swt / widgets / Tree.java
blob: 01d4e2a5e857be0b00e16e8964d09f92bb7395f6 [file] [log] [blame]
/*******************************************************************************
* Copyright (c) 2000, 2005 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.swt.widgets;
import org.eclipse.swt.internal.win32.*;
import org.eclipse.swt.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.events.*;
/**
* Instances of this class provide a selectable user interface object
* that displays a hierarchy of items and issue notificiation when an
* item in the hierarchy is selected.
* <p>
* The item children that may be added to instances of this class
* must be of type <code>TreeItem</code>.
* </p><p>
* Note that although this class is a subclass of <code>Composite</code>,
* it does not make sense to add <code>Control</code> children to it,
* or set a layout on it.
* </p><p>
* <dl>
* <dt><b>Styles:</b></dt>
* <dd>SINGLE, MULTI, CHECK, FULL_SELECTION</dd>
* <dt><b>Events:</b></dt>
* <dd>Selection, DefaultSelection, Collapse, Expand</dd>
* </dl>
* <p>
* Note: Only one of the styles SINGLE and MULTI may be specified.
* </p><p>
* IMPORTANT: This class is <em>not</em> intended to be subclassed.
* </p>
*/
public class Tree extends Composite {
TreeItem [] items;
TreeColumn [] columns;
int hwndParent, hwndHeader, hAnchor;
ImageList imageList;
boolean dragStarted, gestureCompleted;
boolean ignoreSelect, ignoreExpand, ignoreDeselect, ignoreResize;
boolean lockSelection, oldSelected, newSelected;
boolean linesVisible, customDraw, printClient;
static final int INSET = 3;
static final int GRID_WIDTH = 1;
static final int HEADER_MARGIN = 10;
static final int TreeProc;
static final TCHAR TreeClass = new TCHAR (0, OS.WC_TREEVIEW, true);
static final char [] BUTTON = new char [] {'B', 'U', 'T', 'T', 'O', 'N', 0};
static {
WNDCLASS lpWndClass = new WNDCLASS ();
OS.GetClassInfo (0, TreeClass, lpWndClass);
TreeProc = lpWndClass.lpfnWndProc;
}
/**
* Constructs a new instance of this class given its parent
* and a style value describing its behavior and appearance.
* <p>
* The style value is either one of the style constants defined in
* class <code>SWT</code> which is applicable to instances of this
* class, or must be built by <em>bitwise OR</em>'ing together
* (that is, using the <code>int</code> "|" operator) two or more
* of those <code>SWT</code> style constants. The class description
* lists the style constants that are applicable to the class.
* Style bits are also inherited from superclasses.
* </p>
*
* @param parent a composite control which will be the parent of the new instance (cannot be null)
* @param style the style of control to construct
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the parent is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li>
* <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li>
* </ul>
*
* @see SWT#SINGLE
* @see SWT#MULTI
* @see SWT#CHECK
* @see Widget#checkSubclass
* @see Widget#getStyle
*/
public Tree (Composite parent, int style) {
super (parent, checkStyle (style));
}
static int checkStyle (int style) {
/*
* Feature in Windows. It is not possible to create
* a tree that scrolls and does not have scroll bars.
* The TVS_NOSCROLL style will remove the scroll bars
* but the tree will never scroll. Therefore, no matter
* what style bits are specified, set the H_SCROLL and
* V_SCROLL bits so that the SWT style will match the
* widget that Windows creates.
*/
style |= SWT.H_SCROLL | SWT.V_SCROLL;
return checkBits (style, SWT.SINGLE, SWT.MULTI, 0, 0, 0, 0);
}
int _getBackgroundPixel () {
if (OS.IsWinCE) return OS.GetSysColor (OS.COLOR_WINDOW);
int pixel = OS.SendMessage (handle, OS.TVM_GETBKCOLOR, 0, 0);
if (pixel == -1) return OS.GetSysColor (OS.COLOR_WINDOW);
return pixel;
}
void _setBackgroundPixel (int pixel) {
/*
* Bug in Windows. When TVM_GETBKCOLOR is used more
* than once to set the background color of a tree,
* the background color of the lines and the plus/minus
* does not change to the new color. The fix is to set
* the background color to the default before setting
* the new color.
*/
int oldPixel = OS.SendMessage (handle, OS.TVM_GETBKCOLOR, 0, 0);
if (oldPixel != -1) OS.SendMessage (handle, OS.TVM_SETBKCOLOR, 0, -1);
OS.SendMessage (handle, OS.TVM_SETBKCOLOR, 0, pixel);
if ((style & SWT.CHECK) != 0) setCheckboxImageList ();
}
/**
* Adds the listener to the collection of listeners who will
* be notified when the receiver's selection changes, by sending
* it one of the messages defined in the <code>SelectionListener</code>
* interface.
* <p>
* When <code>widgetSelected</code> is called, the item field of the event object is valid.
* If the reciever has <code>SWT.CHECK</code> style set and the check selection changes,
* the event object detail field contains the value <code>SWT.CHECK</code>.
* <code>widgetDefaultSelected</code> is typically called when an item is double-clicked.
* The item field of the event object is valid for default selection, but the detail field is not used.
* </p>
*
* @param listener the listener which should be notified
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see SelectionListener
* @see #removeSelectionListener
* @see SelectionEvent
*/
public void addSelectionListener(SelectionListener listener) {
checkWidget ();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
TypedListener typedListener = new TypedListener (listener);
addListener (SWT.Selection, typedListener);
addListener (SWT.DefaultSelection, typedListener);
}
/**
* Adds the listener to the collection of listeners who will
* be notified when an item in the receiver is expanded or collapsed
* by sending it one of the messages defined in the <code>TreeListener</code>
* interface.
*
* @param listener the listener which should be notified
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see TreeListener
* @see #removeTreeListener
*/
public void addTreeListener(TreeListener listener) {
checkWidget ();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
TypedListener typedListener = new TypedListener (listener);
addListener (SWT.Expand, typedListener);
addListener (SWT.Collapse, typedListener);
}
int borderHandle () {
return hwndParent != 0 ? hwndParent : handle;
}
int callWindowProc (int hwnd, int msg, int wParam, int lParam) {
if (handle == 0) return 0;
if (hwndParent != 0 && hwnd == hwndParent) {
return OS.DefWindowProc (hwnd, msg, wParam, lParam);
}
switch (msg) {
/*
* Bug in Windows. For some reason, when the user clicks
* on this control, the Windows hook WH_MSGFILTER is sent
* despite the fact that an input event from a dialog box,
* message box, menu, or scroll bar did not seem to occur.
* The fix is to ignore the hook.
*/
case OS.WM_LBUTTONDOWN:
case OS.WM_MBUTTONDOWN:
case OS.WM_RBUTTONDOWN:
case OS.WM_XBUTTONDOWN: {
Display display = this.display;
display.ignoreMsgFilter = true;
int code = OS.CallWindowProc (TreeProc, hwnd, msg, wParam, lParam);
display.ignoreMsgFilter = false;
return code;
}
case OS.WM_MOUSEWHEEL: {
int code = OS.CallWindowProc (TreeProc, hwnd, msg, wParam, lParam);
updateScrollBar ();
return code;
}
}
return OS.CallWindowProc (TreeProc, hwnd, msg, wParam, lParam);
}
boolean checkHandle (int hwnd) {
return hwnd == handle || (hwndParent != 0 && hwnd == hwndParent);
}
boolean checkScroll (int hItem) {
/*
* Feature in Windows. If redraw is turned off using WM_SETREDRAW
* and a tree item that is not a child of the first root is selected or
* scrolled using TVM_SELECTITEM or TVM_ENSUREVISIBLE, then scrolling
* does not occur. The fix is to detect this case, and make sure
* that redraw is temporarly enabled. To avoid flashing, DefWindowProc()
* is called to disable redrawing.
*
* NOTE: The code that actually works around the problem is in the
* callers of this method.
*/
if (drawCount == 0) return false;
int hRoot = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_ROOT, 0);
int hParent = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_PARENT, hItem);
while (hParent != hRoot && hParent != 0) {
hParent = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_PARENT, hParent);
}
return hParent == 0;
}
protected void checkSubclass () {
if (!isValidSubclass ()) error (SWT.ERROR_INVALID_SUBCLASS);
}
public Point computeSize (int wHint, int hHint, boolean changed) {
checkWidget ();
int width = 0, height = 0;
if (hwndHeader != 0) {
HDITEM hdItem = new HDITEM ();
hdItem.mask = OS.HDI_WIDTH;
int count = OS.SendMessage (hwndHeader, OS.HDM_GETITEMCOUNT, 0, 0);
for (int i=0; i<count; i++) {
OS.SendMessage (hwndHeader, OS.HDM_GETITEM, i, hdItem);
width += hdItem.cxy;
}
RECT rect = new RECT ();
OS.GetWindowRect (hwndHeader, rect);
height += rect.bottom - rect.top;
}
RECT rect = new RECT ();
int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_ROOT, 0);
while (hItem != 0) {
rect.left = hItem;
if (OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect) != 0) {
width = Math.max (width, rect.right);
height += rect.bottom - rect.top;
}
hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_NEXT, hItem);
}
if (width == 0) width = DEFAULT_WIDTH;
if (height == 0) height = DEFAULT_HEIGHT;
if (wHint != SWT.DEFAULT) width = wHint;
if (hHint != SWT.DEFAULT) height = hHint;
int border = getBorderWidth ();
width += border * 2;
height += border * 2;
if ((style & SWT.V_SCROLL) != 0) {
width += OS.GetSystemMetrics (OS.SM_CXVSCROLL);
}
if ((style & SWT.H_SCROLL) != 0) {
height += OS.GetSystemMetrics (OS.SM_CYHSCROLL);
}
return new Point (width, height);
}
void createHandle () {
super.createHandle ();
state &= ~CANVAS;
/*
* Feature in Windows. In version 5.8 of COMCTL32.DLL,
* if the font is changed for an item, the bounds for the
* item are not updated, causing the text to be clipped.
* The fix is to detect the version of COMCTL32.DLL, and
* if it is one of the versions with the problem, then
* use version 5.00 of the control (a version that does
* not have the problem). This is the recomended work
* around from the MSDN.
*/
if (!OS.IsWinCE) {
if (OS.COMCTL32_MAJOR < 6) {
OS.SendMessage (handle, OS.CCM_SETVERSION, 5, 0);
}
}
/* Set the checkbox image list */
if ((style & SWT.CHECK) != 0) setCheckboxImageList ();
/*
* Feature in Windows. When the control is created,
* it does not use the default system font. A new HFONT
* is created and destroyed when the control is destroyed.
* This means that a program that queries the font from
* this control, uses the font in another control and then
* destroys this control will have the font unexpectedly
* destroyed in the other control. The fix is to assign
* the font ourselves each time the control is created.
* The control will not destroy a font that it did not
* create.
*/
int hFont = OS.GetStockObject (OS.SYSTEM_FONT);
OS.SendMessage (handle, OS.WM_SETFONT, hFont, 0);
}
void createItem (TreeColumn column, int index) {
if (hwndHeader == 0) createParent ();
int columnCount = OS.SendMessage (hwndHeader, OS.HDM_GETITEMCOUNT, 0, 0);
if (!(0 <= index && index <= columnCount)) error (SWT.ERROR_INVALID_RANGE);
if (columnCount == columns.length) {
TreeColumn [] newColumns = new TreeColumn [columns.length + 4];
System.arraycopy (columns, 0, newColumns, 0, columns.length);
columns = newColumns;
}
for (int i=0; i<items.length; i++) {
TreeItem item = items [i];
if (item != null) {
String [] strings = item.strings;
if (strings != null) {
String [] temp = new String [columnCount + 1];
System.arraycopy (strings, 0, temp, 0, index);
System.arraycopy (strings, index, temp, index + 1, columnCount - index);
item.strings = temp;
}
Image [] images = item.images;
if (images != null) {
Image [] temp = new Image [columnCount + 1];
System.arraycopy (images, 0, temp, 0, index);
System.arraycopy (images, index, temp, index + 1, columnCount - index);
item.images = temp;
}
if (index == 0) {
if (columnCount != 0) {
if (strings == null) {
item.strings = new String [columnCount + 1];
item.strings [1] = item.text;
}
item.text = "";
if (images == null) {
item.images = new Image [columnCount + 1];
item.images [1] = item.image;
}
item.image = null;
}
}
if (item.cellBackground != null) {
int [] cellBackground = item.cellBackground;
int [] temp = new int [columnCount + 1];
System.arraycopy (cellBackground, 0, temp, 0, index);
System.arraycopy (cellBackground, index, temp, index + 1, columnCount - index);
temp [index] = -1;
item.cellBackground = temp;
}
if (item.cellForeground != null) {
int [] cellForeground = item.cellForeground;
int [] temp = new int [columnCount + 1];
System.arraycopy (cellForeground, 0, temp, 0, index);
System.arraycopy (cellForeground, index, temp, index + 1, columnCount - index);
temp [index] = -1;
item.cellForeground = temp;
}
if (item.cellFont != null) {
int [] cellFont = item.cellFont;
int [] temp = new int [columnCount + 1];
System.arraycopy (cellFont, 0, temp, 0, index);
System.arraycopy (cellFont, index, temp, index + 1, columnCount- index);
temp [index] = -1;
item.cellFont = temp;
}
}
}
System.arraycopy (columns, index, columns, index + 1, columnCount - index);
columns [index] = column;
/*
* Bug in Windows. For some reason, when HDM_INSERTITEM
* is used to insert an item into a header without text,
* if is not possible to set the text at a later time.
* The fix is to insert the item with an empty string.
*/
int hHeap = OS.GetProcessHeap ();
int pszText = OS.HeapAlloc (hHeap, OS.HEAP_ZERO_MEMORY, TCHAR.sizeof);
HDITEM hdItem = new HDITEM ();
hdItem.mask = OS.HDI_TEXT | OS.HDI_FORMAT;
hdItem.pszText = pszText;
if ((column.style & SWT.LEFT) == SWT.LEFT) hdItem.fmt = OS.HDF_LEFT;
if ((column.style & SWT.CENTER) == SWT.CENTER) hdItem.fmt = OS.HDF_CENTER;
if ((column.style & SWT.RIGHT) == SWT.RIGHT) hdItem.fmt = OS.HDF_RIGHT;
OS.SendMessage (hwndHeader, OS.HDM_INSERTITEM, index, hdItem);
if (pszText != 0) OS.HeapFree (hHeap, 0, pszText);
/* When the first column is created, hide the horizontal scroll bar */
if (columnCount == 0) {
int bits = OS.GetWindowLong (handle, OS.GWL_STYLE);
bits |= OS.TVS_NOHSCROLL;
OS.SetWindowLong (handle, OS.GWL_STYLE, bits);
}
setScrollWidth ();
updateScrollBar ();
/* Redraw to hide the items when the first column is created */
if (columnCount == 0 && OS.SendMessage (handle, OS.TVM_GETCOUNT, 0, 0) != 0) {
OS.InvalidateRect (handle, null, true);
}
}
void createItem (TreeItem item, int hParent, int hInsertAfter) {
int id = 0;
while (id < items.length && items [id] != null) id++;
if (id == items.length) {
TreeItem [] newItems = new TreeItem [items.length + 4];
System.arraycopy (items, 0, newItems, 0, items.length);
items = newItems;
}
TVINSERTSTRUCT tvInsert = new TVINSERTSTRUCT ();
tvInsert.hParent = hParent;
tvInsert.hInsertAfter = hInsertAfter;
tvInsert.lParam = id;
tvInsert.pszText = OS.LPSTR_TEXTCALLBACK;
tvInsert.iImage = tvInsert.iSelectedImage = OS.I_IMAGECALLBACK;
tvInsert.mask = OS.TVIF_TEXT | OS.TVIF_IMAGE | OS.TVIF_SELECTEDIMAGE | OS.TVIF_HANDLE | OS.TVIF_PARAM;
if ((style & SWT.CHECK) != 0) {
tvInsert.mask = tvInsert.mask | OS.TVIF_STATE;
tvInsert.state = 1 << 12;
tvInsert.stateMask = OS.TVIS_STATEIMAGEMASK;
}
int hItem = OS.SendMessage (handle, OS.TVM_INSERTITEM, 0, tvInsert);
if (hItem == 0) error (SWT.ERROR_ITEM_NOT_ADDED);
item.handle = hItem;
items [id] = item;
/*
* This code is intentionally commented.
*/
// if (hParent != 0) {
// int bits = OS.GetWindowLong (handle, OS.GWL_STYLE);
// bits |= OS.TVS_LINESATROOT;
// OS.SetWindowLong (handle, OS.GWL_STYLE, bits);
// }
/*
* Bug in Windows. When a child item is added to a parent item
* that has no children outside of WM_NOTIFY with control code
* TVN_ITEMEXPANDED, the tree widget does not redraw the +/-
* indicator. The fix is to detect the case when the first
* child is added to a visible parent item and redraw the parent.
*/
if (OS.IsWindowVisible (handle) && drawCount == 0) {
int hChild = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CHILD, hParent);
if (hChild != 0 && OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_NEXT, hChild) == 0) {
RECT rect = new RECT ();
rect.left = hParent;
if (OS.SendMessage (handle, OS.TVM_GETITEMRECT, 0, rect) != 0) {
OS.InvalidateRect (handle, rect, true);
}
}
}
updateScrollBar ();
}
void createParent () {
forceResize ();
RECT rect = new RECT ();
OS.GetWindowRect (handle, rect);
OS.MapWindowPoints (0, parent.handle, rect, 2);
int oldStyle = OS.GetWindowLong (handle, OS.GWL_STYLE);
int newStyle = super.widgetStyle () & ~OS.WS_VISIBLE;
if ((oldStyle & OS.WS_DISABLED) != 0) newStyle |= OS.WS_DISABLED;
// if ((oldStyle & OS.WS_VISIBLE) != 0) newStyle |= OS.WS_VISIBLE;
hwndParent = OS.CreateWindowEx (
super.widgetExtStyle (),
super.windowClass (),
null,
newStyle,
rect.left,
rect.top,
rect.right - rect.left,
rect.bottom - rect.top,
parent.handle,
0,
OS.GetModuleHandle (null),
null);
if (hwndParent == 0) error (SWT.ERROR_NO_HANDLES);
OS.SetWindowLong (hwndParent, OS.GWL_ID, hwndParent);
int bits = 0;
if (OS.WIN32_VERSION >= OS.VERSION (4, 10)) {
bits |= OS.WS_EX_NOINHERITLAYOUT;
if ((style & SWT.RIGHT_TO_LEFT) != 0) bits |= OS.WS_EX_LAYOUTRTL;
}
hwndHeader = OS.CreateWindowEx (
bits,
new TCHAR (0, OS.WC_HEADER, true),
null,
OS.HDS_BUTTONS | OS.HDS_FULLDRAG | OS.HDS_HIDDEN | OS.WS_CHILD | OS.WS_CLIPSIBLINGS,
0, 0, 0, 0,
hwndParent,
0,
OS.GetModuleHandle (null),
null);
if (hwndHeader == 0) error (SWT.ERROR_NO_HANDLES);
OS.SetWindowLong (hwndHeader, OS.GWL_ID, hwndHeader);
if (OS.IsDBLocale) {
int hIMC = OS.ImmGetContext (handle);
OS.ImmAssociateContext (hwndParent, hIMC);
OS.ImmAssociateContext (hwndHeader, hIMC);
OS.ImmReleaseContext (handle, hIMC);
}
if (!OS.IsPPC) {
if ((style & SWT.BORDER) != 0) {
int oldExStyle = OS.GetWindowLong (handle, OS.GWL_EXSTYLE);
oldExStyle &= ~OS.WS_EX_CLIENTEDGE;
OS.SetWindowLong (handle, OS.GWL_EXSTYLE, oldExStyle);
}
}
int hFont = OS.SendMessage (handle, OS.WM_GETFONT, 0, 0);
if (hFont != 0) OS.SendMessage (hwndHeader, OS.WM_SETFONT, hFont, 0);
int hImageList = OS.SendMessage (handle, OS.TVM_GETIMAGELIST, OS.TVSIL_NORMAL, 0);
if (hImageList != 0) {
OS.SendMessage (hwndHeader, OS.HDM_SETIMAGELIST, 0, hImageList);
}
int hwndInsertAfter = OS.GetWindow (handle, OS.GW_HWNDPREV);
int flags = OS.SWP_NOSIZE | OS.SWP_NOMOVE | OS.SWP_NOACTIVATE;
SetWindowPos (hwndParent, hwndInsertAfter, 0, 0, 0, 0, flags);
SCROLLINFO info = new SCROLLINFO ();
info.cbSize = SCROLLINFO.sizeof;
info.fMask = OS.SIF_RANGE | OS.SIF_PAGE;
OS.GetScrollInfo (hwndParent, OS.SB_HORZ, info);
info.nPage = info.nMax + 1;
OS.SetScrollInfo (hwndParent, OS.SB_HORZ, info, true);
OS.GetScrollInfo (hwndParent, OS.SB_VERT, info);
info.nPage = info.nMax + 1;
OS.SetScrollInfo (hwndParent, OS.SB_VERT, info, true);
customDraw = true;
deregister ();
if ((oldStyle & OS.WS_VISIBLE) != 0) {
OS.ShowWindow (hwndParent, OS.SW_SHOW);
}
int hwndFocus = OS.GetFocus ();
if (hwndFocus == handle) OS.SetFocus (hwndParent);
OS.SetParent (handle, hwndParent);
if (hwndFocus == handle) OS.SetFocus (handle);
register ();
}
void createWidget () {
super.createWidget ();
items = new TreeItem [4];
columns = new TreeColumn [4];
}
int defaultBackground () {
return OS.GetSysColor (OS.COLOR_WINDOW);
}
void deregister () {
super.deregister ();
if (hwndParent != 0) display.removeControl (hwndParent);
}
/**
* Deselects all selected items in the receiver.
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public void deselectAll () {
checkWidget ();
TVITEM tvItem = new TVITEM ();
tvItem.mask = OS.TVIF_STATE;
tvItem.stateMask = OS.TVIS_SELECTED;
if ((style & SWT.SINGLE) != 0) {
int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
if (hItem != 0) {
tvItem.hItem = hItem;
OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
}
} else {
int oldProc = OS.GetWindowLong (handle, OS.GWL_WNDPROC);
OS.SetWindowLong (handle, OS.GWL_WNDPROC, TreeProc);
for (int i=0; i<items.length; i++) {
TreeItem item = items [i];
if (item != null) {
tvItem.hItem = item.handle;
OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
}
}
OS.SetWindowLong (handle, OS.GWL_WNDPROC, oldProc);
}
}
void destroyItem (TreeColumn column) {
if (hwndHeader == 0) error (SWT.ERROR_ITEM_NOT_REMOVED);
int columnCount = OS.SendMessage (hwndHeader, OS.HDM_GETITEMCOUNT, 0, 0);
int index = 0;
while (index < columnCount) {
if (columns [index] == column) break;
index++;
}
if (OS.SendMessage (hwndHeader, OS.HDM_DELETEITEM, index, 0) == 0) {
error (SWT.ERROR_ITEM_NOT_REMOVED);
}
System.arraycopy (columns, index + 1, columns, index, --columnCount - index);
columns [columnCount] = null;
for (int i=0; i<items.length; i++) {
TreeItem item = items [i];
if (item != null) {
if (columnCount == 0) {
item.strings = null;
item.images = null;
item.cellBackground = null;
item.cellForeground = null;
item.cellFont = null;
} else {
if (item.strings != null) {
String [] strings = item.strings;
if (index == 0) {
item.text = strings [1] != null ? strings [1] : "";
}
String [] temp = new String [columnCount];
System.arraycopy (strings, 0, temp, 0, index);
System.arraycopy (strings, index + 1, temp, index, columnCount - index);
item.strings = temp;
} else {
if (index == 0) item.text = "";
}
if (item.images != null) {
Image [] images = item.images;
if (index == 0) item.image = images [1];
Image [] temp = new Image [columnCount];
System.arraycopy (images, 0, temp, 0, index);
System.arraycopy (images, index + 1, temp, index, columnCount - index);
item.images = temp;
} else {
if (index == 0) item.image = null;
}
if (item.cellBackground != null) {
int [] cellBackground = item.cellBackground;
int [] temp = new int [columnCount];
System.arraycopy (cellBackground, 0, temp, 0, index);
System.arraycopy (cellBackground, index + 1, temp, index, columnCount - index);
item.cellBackground = temp;
}
if (item.cellForeground != null) {
int [] cellForeground = item.cellForeground;
int [] temp = new int [columnCount];
System.arraycopy (cellForeground, 0, temp, 0, index);
System.arraycopy (cellForeground, index + 1, temp, index, columnCount - index);
item.cellForeground = temp;
}
if (item.cellFont != null) {
int [] cellFont = item.cellFont;
int [] temp = new int [columnCount];
System.arraycopy (cellFont, 0, temp, 0, index);
System.arraycopy (cellFont, index + 1, temp, index, columnCount - index);
item.cellFont = temp;
}
}
}
}
/*
* When the last column is deleted, show the horizontal
* scroll bar. Otherwise, left align the first column
* and redraw the columns to the right.
*/
if (columnCount == 0) {
int bits = OS.GetWindowLong (handle, OS.GWL_STYLE);
bits &= ~OS.TVS_NOHSCROLL;
OS.SetWindowLong (handle, OS.GWL_STYLE, bits);
OS.InvalidateRect (handle, null, true);
} else {
if (index == 0) {
columns [0].style &= ~(SWT.LEFT | SWT.RIGHT | SWT.CENTER);
columns [0].style |= SWT.LEFT;
HDITEM hdItem = new HDITEM ();
hdItem.mask = OS.HDI_FORMAT | OS.HDI_IMAGE;
OS.SendMessage (hwndHeader, OS.HDM_GETITEM, index, hdItem);
hdItem.fmt &= ~OS.HDF_JUSTIFYMASK;
hdItem.fmt |= OS.HDF_LEFT;
OS.SendMessage (hwndHeader, OS.HDM_SETITEM, index, hdItem);
}
RECT rect = new RECT (), itemRect = new RECT ();
OS.GetClientRect (handle, rect);
OS.SendMessage (hwndHeader, OS.HDM_GETITEMRECT, index - 1, itemRect);
rect.left = itemRect.right;
OS.InvalidateRect (handle, rect, true);
}
setScrollWidth ();
}
void destroyItem (TreeItem item) {
/*
* Feature in Windows. When an item is removed that is not
* visible in the tree because it belongs to a collapsed branch,
* Windows redraws the tree causing a flash for each item that
* is removed. The fix is to detect whether the item is visible,
* force the widget to be fully painted, turn off redraw, remove
* the item and validate the damage caused by the removing of
* the item.
*/
int hItem = item.handle, hParent = 0;
boolean fixRedraw = false;
if (drawCount == 0 && OS.IsWindowVisible (handle)) {
RECT rect = new RECT ();
rect.left = hItem;
fixRedraw = OS.SendMessage (handle, OS.TVM_GETITEMRECT, 0, rect) == 0;
}
if (fixRedraw) {
hParent = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_PARENT, hItem);
OS.UpdateWindow (handle);
OS.SendMessage (handle, OS.WM_SETREDRAW, 0, 0);
}
TVITEM tvItem = new TVITEM ();
tvItem.mask = OS.TVIF_HANDLE | OS.TVIF_PARAM;
releaseItems (item.getItems (), tvItem);
releaseItem (item, tvItem);
if ((style & SWT.MULTI) != 0) {
ignoreDeselect = ignoreSelect = lockSelection = true;
}
OS.SendMessage (handle, OS.TVM_DELETEITEM, 0, hItem);
if ((style & SWT.MULTI) != 0) {
ignoreDeselect = ignoreSelect = lockSelection = false;
}
if (fixRedraw) {
OS.SendMessage (handle, OS.WM_SETREDRAW, 1, 0);
OS.ValidateRect (handle, null);
/*
* If the item that was deleted was the last child of a tree item that
* is visible, redraw the parent item to force the +/- to be updated.
*/
if (OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CHILD, hParent) == 0) {
RECT rect = new RECT ();
rect.left = hParent;
if (OS.SendMessage (handle, OS.TVM_GETITEMRECT, 0, rect) != 0) {
OS.InvalidateRect (handle, rect, true);
}
}
}
int count = OS.SendMessage (handle, OS.TVM_GETCOUNT, 0, 0);
if (count == 0) {
if (imageList != null) {
OS.SendMessage (handle, OS.TVM_SETIMAGELIST, 0, 0);
if (hwndHeader != 0) {
OS.SendMessage (hwndHeader, OS.HDM_SETIMAGELIST, 0, 0);
}
display.releaseImageList (imageList);
}
imageList = null;
if (hwndParent == 0) customDraw = false;
items = new TreeItem [4];
}
updateScrollBar ();
}
void enableWidget (boolean enabled) {
super.enableWidget (enabled);
/*
* Feature in Windows. When a tree is given a background color
* using TVM_SETBKCOLOR and the tree is disabled, Windows draws
* the tree using the background color rather than the disabled
* colors. This is different from the table which draws grayed.
* The fix is to set the default background color while the tree
* is disabled and restore it when enabled.
*/
if (background != -1) {
_setBackgroundPixel (enabled ? background : -1);
}
if (hwndParent != 0) OS.EnableWindow (hwndParent, enabled);
}
Widget findItem (int id) {
TVITEM tvItem = new TVITEM ();
tvItem.mask = OS.TVIF_HANDLE | OS.TVIF_PARAM;
tvItem.hItem = id;
if (OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem) != 0) {
int lParam = tvItem.lParam;
if (0 <= lParam && lParam < items.length) return items [lParam];
}
return null;
}
int getBackgroundPixel () {
if (!OS.IsWinCE) return _getBackgroundPixel ();
/*
* Feature in Windows. When a tree is given a background color
* using TVM_SETBKCOLOR and the tree is disabled, Windows draws
* the tree using the background color rather than the disabled
* colors. This is different from the table which draws grayed.
* The fix is to set the default background color while the tree
* is disabled and restore it when enabled.
*/
if (!OS.IsWindowEnabled (handle) && background != -1) {
return background;
}
return _getBackgroundPixel ();
}
int getForegroundPixel () {
if (OS.IsWinCE) return OS.GetSysColor (OS.COLOR_WINDOWTEXT);
int pixel = OS.SendMessage (handle, OS.TVM_GETTEXTCOLOR, 0, 0);
if (pixel == -1) return OS.GetSysColor (OS.COLOR_WINDOWTEXT);
return pixel;
}
/**
* Returns the width in pixels of a grid line.
*
* @return the width of a grid line in pixels
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @since 3.1
*/
public int getGridLineWidth () {
checkWidget ();
return GRID_WIDTH;
}
/**
* Returns the height of the receiver's header
*
* @return the height of the header or zero if the header is not visible
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @since 3.1
*/
public int getHeaderHeight () {
checkWidget ();
if (hwndHeader == 0) return 0;
RECT rect = new RECT ();
OS.GetWindowRect (hwndHeader, rect);
return rect.bottom - rect.top;
}
/**
* Returns <code>true</code> if the receiver's header is visible,
* and <code>false</code> otherwise.
* <p>
* If one of the receiver's ancestors is not visible or some
* other condition makes the receiver not visible, this method
* may still indicate that it is considered visible even though
* it may not actually be showing.
* </p>
*
* @return the receiver's header's visibility state
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @since 3.1
*/
public boolean getHeaderVisible () {
checkWidget ();
if (hwndHeader == 0) return false;
int bits = OS.GetWindowLong (hwndHeader, OS.GWL_STYLE);
return (bits & OS.WS_VISIBLE) != 0;
}
Point getImageSize () {
if (imageList != null) return imageList.getImageSize ();
return new Point (0, getItemHeight ());
}
/**
* Returns the column at the given, zero-relative index in the
* receiver. Throws an exception if the index is out of range.
* If no <code>TreeColumn</code>s were created by the programmer,
* this method will throw <code>ERROR_INVALID_RANGE</code> despite
* the fact that a single column of data may be visible in the tree.
* This occurs when the programmer uses the tree like a list, adding
* items but never creating a column.
*
* @param index the index of the column to return
* @return the column at the given index
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the list minus 1 (inclusive)</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @since 3.1
*/
public TreeColumn getColumn (int index) {
checkWidget ();
if (hwndHeader == 0) error (SWT.ERROR_INVALID_RANGE);
int count = OS.SendMessage (hwndHeader, OS.HDM_GETITEMCOUNT, 0, 0);
if (!(0 <= index && index < count)) error (SWT.ERROR_INVALID_RANGE);
return columns [index];
}
/**
* Returns the number of columns contained in the receiver.
* If no <code>TreeColumn</code>s were created by the programmer,
* this value is zero, despite the fact that visually, one column
* of items may be visible. This occurs when the programmer uses
* the tree like a list, adding items but never creating a column.
*
* @return the number of columns
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @since 3.1
*/
public int getColumnCount () {
checkWidget ();
if (hwndHeader == 0) return 0;
return OS.SendMessage (hwndHeader, OS.HDM_GETITEMCOUNT, 0, 0);
}
/**
* Returns an array of <code>TreeColumn</code>s which are the
* columns in the receiver. If no <code>TreeColumn</code>s were
* created by the programmer, the array is empty, despite the fact
* that visually, one column of items may be visible. This occurs
* when the programmer uses the tree like a list, adding items but
* never creating a column.
* <p>
* Note: This is not the actual structure used by the receiver
* to maintain its list of items, so modifying the array will
* not affect the receiver.
* </p>
*
* @return the items in the receiver
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @since 3.1
*/
public TreeColumn [] getColumns () {
checkWidget ();
if (hwndHeader == 0) return new TreeColumn [0];
int count = OS.SendMessage (hwndHeader, OS.HDM_GETITEMCOUNT, 0, 0);
TreeColumn [] result = new TreeColumn [count];
System.arraycopy (columns, 0, result, 0, count);
return result;
}
/**
* Returns the item at the given, zero-relative index in the
* receiver. Throws an exception if the index is out of range.
*
* @param index the index of the item to return
* @return the item at the given index
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the list minus 1 (inclusive)</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @since 3.1
*/
public TreeItem getItem (int index) {
checkWidget ();
if (index < 0) error (SWT.ERROR_INVALID_RANGE);
int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_ROOT, 0);
while (index-- > 0 && hItem != 0) {
hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_NEXT, hItem);
}
if (hItem == 0) error (SWT.ERROR_INVALID_RANGE);
TVITEM tvItem = new TVITEM ();
tvItem.mask = OS.TVIF_HANDLE | OS.TVIF_PARAM;
tvItem.hItem = hItem;
OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
return items [tvItem.lParam];
}
/**
* Returns the item at the given point in the receiver
* or null if no such item exists. The point is in the
* coordinate system of the receiver.
*
* @param point the point used to locate the item
* @return the item at the given point
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the point is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public TreeItem getItem (Point point) {
checkWidget ();
if (point == null) error (SWT.ERROR_NULL_ARGUMENT);
TVHITTESTINFO lpht = new TVHITTESTINFO ();
lpht.x = point.x;
lpht.y = point.y;
OS.SendMessage (handle, OS.TVM_HITTEST, 0, lpht);
if (lpht.hItem != 0) {
if ((style & SWT.FULL_SELECTION) != 0 || (lpht.flags & OS.TVHT_ONITEM) != 0) {
TVITEM tvItem = new TVITEM ();
tvItem.mask = OS.TVIF_HANDLE | OS.TVIF_PARAM;
tvItem.hItem = lpht.hItem;
OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
return items [tvItem.lParam];
}
}
return null;
}
/**
* Returns the number of items contained in the receiver
* that are direct item children of the receiver. The
* number that is returned is the number of roots in the
* tree.
*
* @return the number of items
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public int getItemCount () {
checkWidget ();
int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_ROOT, 0);
if (hItem == 0) return 0;
return getItemCount (hItem);
}
int getItemCount (int hItem) {
int count = 0;
while (hItem != 0) {
hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_NEXT, hItem);
count++;
}
return count;
}
/**
* Returns the height of the area which would be used to
* display <em>one</em> of the items in the tree.
*
* @return the height of one item
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public int getItemHeight () {
checkWidget ();
return OS.SendMessage (handle, OS.TVM_GETITEMHEIGHT, 0, 0);
}
/**
* Returns the items contained in the receiver
* that are direct item children of the receiver. These
* are the roots of the tree.
* <p>
* Note: This is not the actual structure used by the receiver
* to maintain its list of items, so modifying the array will
* not affect the receiver.
* </p>
*
* @return the items
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public TreeItem [] getItems () {
checkWidget ();
int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_ROOT, 0);
if (hItem == 0) return new TreeItem [0];
return getItems (hItem);
}
TreeItem [] getItems (int hTreeItem) {
int count = 0, hItem = hTreeItem;
while (hItem != 0) {
hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_NEXT, hItem);
count++;
}
int index = 0;
TreeItem [] result = new TreeItem [count];
TVITEM tvItem = new TVITEM ();
tvItem.mask = OS.TVIF_HANDLE | OS.TVIF_PARAM;
tvItem.hItem = hTreeItem;
/*
* Feature in Windows. In some cases an expand or collapse message
* can occurs from within TVM_DELETEITEM. When this happens, the item
* being destroyed has been removed from the list of items but has not
* been deleted from the tree. The fix is to check for null items and
* remove them from the list.
*/
while (tvItem.hItem != 0) {
OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
TreeItem item = items [tvItem.lParam];
if (item != null) result [index++] = item;
tvItem.hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_NEXT, tvItem.hItem);
}
if (index != count) {
TreeItem [] newResult = new TreeItem [index];
System.arraycopy (result, 0, newResult, 0, index);
result = newResult;
}
return result;
}
/**
* Returns <code>true</code> if the receiver's lines are visible,
* and <code>false</code> otherwise.
* <p>
* If one of the receiver's ancestors is not visible or some
* other condition makes the receiver not visible, this method
* may still indicate that it is considered visible even though
* it may not actually be showing.
* </p>
*
* @return the visibility state of the lines
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @since 3.1
*/
public boolean getLinesVisible () {
checkWidget ();
return linesVisible;
}
/**
* Returns the receiver's parent item, which must be a
* <code>TreeItem</code> or null when the receiver is a
* root.
*
* @return the receiver's parent item
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public TreeItem getParentItem () {
checkWidget ();
return null;
}
/**
* Returns an array of <code>TreeItem</code>s that are currently
* selected in the receiver. An empty array indicates that no
* items are selected.
* <p>
* Note: This is not the actual structure used by the receiver
* to maintain its selection, so modifying the array will
* not affect the receiver.
* </p>
* @return an array representing the selection
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public TreeItem [] getSelection () {
checkWidget ();
if ((style & SWT.SINGLE) != 0) {
int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
if (hItem == 0) return new TreeItem [0];
TVITEM tvItem = new TVITEM ();
tvItem.mask = OS.TVIF_PARAM | OS.TVIF_STATE;
tvItem.hItem = hItem;
OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
if ((tvItem.state & OS.TVIS_SELECTED) == 0) return new TreeItem [0];
return new TreeItem [] {items [tvItem.lParam]};
}
int count = 0;
TreeItem [] guess = new TreeItem [8];
TVITEM tvItem = new TVITEM ();
tvItem.mask = OS.TVIF_PARAM | OS.TVIF_STATE;
int oldProc = OS.GetWindowLong (handle, OS.GWL_WNDPROC);
OS.SetWindowLong (handle, OS.GWL_WNDPROC, TreeProc);
for (int i=0; i<items.length; i++) {
TreeItem item = items [i];
if (item != null) {
tvItem.hItem = item.handle;
OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
if ((tvItem.state & OS.TVIS_SELECTED) != 0) {
if (count < guess.length) guess [count] = item;
count++;
}
}
}
OS.SetWindowLong (handle, OS.GWL_WNDPROC, oldProc);
if (count == 0) return new TreeItem [0];
if (count == guess.length) return guess;
TreeItem [] result = new TreeItem [count];
if (count < guess.length) {
System.arraycopy (guess, 0, result, 0, count);
return result;
}
OS.SetWindowLong (handle, OS.GWL_WNDPROC, TreeProc);
int index = 0;
for (int i=0; i<items.length; i++) {
TreeItem item = items [i];
if (item != null) {
tvItem.hItem = item.handle;
OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
if ((tvItem.state & OS.TVIS_SELECTED) != 0) {
result [index++] = item;
}
}
}
OS.SetWindowLong (handle, OS.GWL_WNDPROC, oldProc);
return result;
}
/**
* Returns the number of selected items contained in the receiver.
*
* @return the number of selected items
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public int getSelectionCount () {
checkWidget ();
if ((style & SWT.SINGLE) != 0) {
int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
if (hItem == 0) return 0;
TVITEM tvItem = new TVITEM ();
tvItem.mask = OS.TVIF_STATE;
tvItem.hItem = hItem;
OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
if ((tvItem.state & OS.TVIS_SELECTED) == 0) return 0;
return 1;
}
int count = 0;
TVITEM tvItem = new TVITEM ();
tvItem.mask = OS.TVIF_STATE;
int oldProc = OS.GetWindowLong (handle, OS.GWL_WNDPROC);
OS.SetWindowLong (handle, OS.GWL_WNDPROC, TreeProc);
for (int i=0; i<items.length; i++) {
TreeItem item = items [i];
if (item != null) {
tvItem.hItem = item.handle;
OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
if ((tvItem.state & OS.TVIS_SELECTED) != 0) count++;
}
}
OS.SetWindowLong (handle, OS.GWL_WNDPROC, oldProc);
return count;
}
/**
* Returns the item which is currently at the top of the receiver.
* This item can change when items are expanded, collapsed, scrolled
* or new items are added or removed.
*
* @return the item at the top of the receiver
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @since 2.1
*/
public TreeItem getTopItem () {
checkWidget ();
int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_FIRSTVISIBLE, 0);
if (hItem == 0) return null;
TVITEM tvItem = new TVITEM ();
tvItem.mask = OS.TVIF_PARAM;
tvItem.hItem = hItem;
if (OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem) == 0) return null;
return items [tvItem.lParam];
}
int imageIndex (Image image) {
if (image == null) return OS.I_IMAGENONE;
if (imageList == null) {
int hOldList = OS.SendMessage (handle, OS.TVM_GETIMAGELIST, OS.TVSIL_NORMAL, 0);
if (hOldList != 0) OS.ImageList_Destroy (hOldList);
Rectangle bounds = image.getBounds ();
imageList = display.getImageList (new Point (bounds.width, bounds.height));
int index = imageList.indexOf (image);
if (index == -1) index = imageList.add (image);
int hImageList = imageList.getHandle ();
OS.SendMessage (handle, OS.TVM_SETIMAGELIST, OS.TVSIL_NORMAL, hImageList);
if (hwndHeader != 0) {
OS.SendMessage (hwndHeader, OS.HDM_SETIMAGELIST, 0, hImageList);
}
updateScrollBar ();
return index;
}
int index = imageList.indexOf (image);
if (index != -1) return index;
return imageList.add (image);
}
int indexOf (int hItem, int hChild) {
int index = 0;
while (hItem != 0 && hItem != hChild) {
hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_NEXT, hItem);
index++;
}
return hItem == hChild ? index : -1;
}
/**
* Searches the receiver's list starting at the first column
* (index 0) until a column is found that is equal to the
* argument, and returns the index of that column. If no column
* is found, returns -1.
*
* @param column the search column
* @return the index of the column
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the string is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @since 3.1
*/
public int indexOf (TreeColumn column) {
checkWidget ();
if (column == null) error (SWT.ERROR_NULL_ARGUMENT);
if (column.isDisposed()) error(SWT.ERROR_INVALID_ARGUMENT);
if (hwndHeader == 0) return -1;
int count = OS.SendMessage (hwndHeader, OS.HDM_GETITEMCOUNT, 0, 0);
for (int i=0; i<count; i++) {
if (columns [i] == column) return i;
}
return -1;
}
/**
* Searches the receiver's list starting at the first item
* (index 0) until an item is found that is equal to the
* argument, and returns the index of that item. If no item
* is found, returns -1.
*
* @param item the search item
* @return the index of the item
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the tool item is null</li>
* <li>ERROR_INVALID_ARGUMENT - if the tool item has been disposed</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @since 3.1
*/
public int indexOf (TreeItem item) {
checkWidget ();
if (item == null) error (SWT.ERROR_NULL_ARGUMENT);
if (item.isDisposed()) error(SWT.ERROR_INVALID_ARGUMENT);
int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_ROOT, 0);
return hItem == 0 ? -1 : indexOf (hItem, item.handle);
}
void register () {
super.register ();
if (hwndParent != 0) display.addControl (hwndParent, this);
}
boolean releaseItem (TreeItem item, TVITEM tvItem) {
int hItem = item.handle;
if (hItem == hAnchor) hAnchor = 0;
if (item.isDisposed ()) return false;
tvItem.hItem = hItem;
OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
items [tvItem.lParam] = null;
return true;
}
void releaseItems (TreeItem [] nodes, TVITEM tvItem) {
for (int i=0; i<nodes.length; i++) {
TreeItem item = nodes [i];
TreeItem [] sons = item.getItems ();
if (sons.length != 0) {
releaseItems (sons, tvItem);
}
if (releaseItem (item, tvItem)) {
item.releaseResources ();
}
}
}
void releaseHandle () {
super.releaseHandle ();
hwndParent = hwndHeader = 0;
}
void releaseWidget () {
int columnCount = OS.SendMessage (hwndHeader, OS.HDM_GETITEMCOUNT, 0, 0);
for (int i=0; i<items.length; i++) {
TreeItem item = items [i];
if (item != null && !item.isDisposed ()) {
item.releaseResources ();
}
}
items = null;
for (int i=0; i<columnCount; i++) {
TreeColumn column = columns [i];
if (!column.isDisposed ()) column.releaseResources ();
}
columns = null;
/*
* Feature in Windows. For some reason, when TVM_GETIMAGELIST
* or TVM_SETIMAGELIST is sent, the tree issues NM_CUSTOMDRAW
* messages. This behavior is unwanted when the tree is being
* disposed. The fix is to ingore NM_CUSTOMDRAW messages by
* clearing the custom draw flag.
*
* NOTE: This only happens on Windows XP.
*/
customDraw = false;
if (imageList != null) {
OS.SendMessage (handle, OS.TVM_SETIMAGELIST, OS.TVSIL_NORMAL, 0);
OS.SendMessage (hwndHeader, OS.HDM_SETIMAGELIST, 0, 0);
display.releaseImageList (imageList);
} else {
int hOldList = OS.SendMessage (handle, OS.TVM_GETIMAGELIST, OS.TVSIL_NORMAL, 0);
OS.SendMessage (handle, OS.TVM_SETIMAGELIST, OS.TVSIL_NORMAL, 0);
OS.SendMessage (hwndHeader, OS.HDM_SETIMAGELIST, 0, 0);
if (hOldList != 0) OS.ImageList_Destroy (hOldList);
}
imageList = null;
int hOldList = OS.SendMessage (handle, OS.TVM_GETIMAGELIST, OS.TVSIL_STATE, 0);
OS.SendMessage (handle, OS.TVM_SETIMAGELIST, OS.TVSIL_STATE, 0);
if (hOldList != 0) OS.ImageList_Destroy (hOldList);
super.releaseWidget ();
}
/**
* Removes all of the items from the receiver.
* <p>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public void removeAll () {
checkWidget ();
ignoreDeselect = ignoreSelect = true;
boolean redraw = drawCount == 0 && OS.IsWindowVisible (handle);
if (redraw) {
OS.DefWindowProc (handle, OS.WM_SETREDRAW, 0, 0);
/*
* This code is intentionally commented.
*/
// OS.SendMessage (handle, OS.WM_SETREDRAW, 0, 0);
}
int result = OS.SendMessage (handle, OS.TVM_DELETEITEM, 0, OS.TVI_ROOT);
if (redraw) {
OS.DefWindowProc (handle, OS.WM_SETREDRAW, 1, 0);
/*
* This code is intentionally commented.
*/
// OS.SendMessage (handle, OS.WM_SETREDRAW, 1, 0);
OS.InvalidateRect (handle, null, true);
}
ignoreDeselect = ignoreSelect = false;
if (result == 0) error (SWT.ERROR_ITEM_NOT_REMOVED);
for (int i=0; i<items.length; i++) {
TreeItem item = items [i];
if (item != null && !item.isDisposed ()) {
item.releaseResources ();
}
}
if (imageList != null) {
OS.SendMessage (handle, OS.TVM_SETIMAGELIST, 0, 0);
if (hwndHeader != 0) {
OS.SendMessage (hwndHeader, OS.HDM_SETIMAGELIST, 0, 0);
}
display.releaseImageList (imageList);
}
imageList = null;
if (hwndParent == 0) customDraw = false;
items = new TreeItem [4];
hAnchor = 0;
updateScrollBar ();
}
/**
* Removes the listener from the collection of listeners who will
* be notified when the receiver's selection changes.
*
* @param listener the listener which should no longer be notified
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see SelectionListener
* @see #addSelectionListener
*/
public void removeSelectionListener (SelectionListener listener) {
checkWidget ();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
eventTable.unhook (SWT.Selection, listener);
eventTable.unhook (SWT.DefaultSelection, listener);
}
/**
* Removes the listener from the collection of listeners who will
* be notified when items in the receiver are expanded or collapsed..
*
* @param listener the listener which should no longer be notified
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see TreeListener
* @see #addTreeListener
*/
public void removeTreeListener(TreeListener listener) {
checkWidget ();
if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
if (eventTable == null) return;
eventTable.unhook (SWT.Expand, listener);
eventTable.unhook (SWT.Collapse, listener);
}
/**
* Display a mark indicating the point at which an item will be inserted.
* The drop insert item has a visual hint to show where a dragged item
* will be inserted when dropped on the tree.
*
* @param item the insert item. Null will clear the insertion mark.
* @param before true places the insert mark above 'item'. false places
* the insert mark below 'item'.
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_INVALID_ARGUMENT - if the item has been disposed</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public void setInsertMark (TreeItem item, boolean before) {
checkWidget ();
int hItem = 0;
if (item != null) {
if (item.isDisposed()) error(SWT.ERROR_INVALID_ARGUMENT);
hItem = item.handle;
}
OS.SendMessage (handle, OS.TVM_SETINSERTMARK, (before) ? 0 : 1, hItem);
}
/**
* Marks the receiver's lines as visible if the argument is <code>true</code>,
* and marks it invisible otherwise.
* <p>
* If one of the receiver's ancestors is not visible or some
* other condition makes the receiver not visible, marking
* it visible may not actually cause it to be displayed.
* </p>
*
* @param show the new visibility state
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @since 3.1
*/
public void setLinesVisible (boolean show) {
checkWidget ();
if (linesVisible == show) return;
linesVisible = show;
OS.InvalidateRect (handle, null, true);
}
int scrolledHandle () {
if (hwndHeader == 0) return handle;
int count = OS.SendMessage (hwndHeader, OS.HDM_GETITEMCOUNT, 0, 0);
return count == 0 ? handle : hwndParent;
}
/**
* Selects all of the items in the receiver.
* <p>
* If the receiver is single-select, do nothing.
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public void selectAll () {
checkWidget ();
if ((style & SWT.SINGLE) != 0) return;
TVITEM tvItem = new TVITEM ();
tvItem.mask = OS.TVIF_STATE;
tvItem.state = OS.TVIS_SELECTED;
tvItem.stateMask = OS.TVIS_SELECTED;
int oldProc = OS.GetWindowLong (handle, OS.GWL_WNDPROC);
OS.SetWindowLong (handle, OS.GWL_WNDPROC, TreeProc);
for (int i=0; i<items.length; i++) {
TreeItem item = items [i];
if (item != null) {
tvItem.hItem = item.handle;
OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
}
}
OS.SetWindowLong (handle, OS.GWL_WNDPROC, oldProc);
}
void setBackgroundPixel (int pixel) {
if (background == pixel) return;
background = pixel;
/*
* Feature in Windows. When a tree is given a background color
* using TVM_SETBKCOLOR and the tree is disabled, Windows draws
* the tree using the background color rather than the disabled
* colors. This is different from the table which draws grayed.
* The fix is to set the default background color while the tree
* is disabled and restore it when enabled.
*/
if (OS.IsWindowEnabled (handle)) _setBackgroundPixel (pixel);
}
void setBounds (int x, int y, int width, int height, int flags) {
/*
* Ensure that the selection is visible when the tree is resized
* from a zero size to a size that can show the selection.
*/
boolean fixSelection = false;
if ((flags & OS.SWP_NOSIZE) == 0 && (width != 0 || height != 0)) {
if (OS.SendMessage (handle, OS.TVM_GETVISIBLECOUNT, 0, 0) == 0) {
fixSelection = true;
}
}
super.setBounds (x, y, width, height, flags);
if (fixSelection) {
int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
if (hItem != 0) showItem (hItem);
}
}
void setCursor () {
/*
* Bug in Windows. Under certain circumstances, when WM_SETCURSOR
* is sent from SendMessage(), Windows GP's in the window proc for
* the tree. The fix is to avoid calling the tree window proc and
* set the cursor for the tree outside of WM_SETCURSOR.
*
* NOTE: This code assumes that the default cursor for the tree
* is IDC_ARROW.
*/
Cursor cursor = findCursor ();
int hCursor = cursor == null ? OS.LoadCursor (0, OS.IDC_ARROW) : cursor.handle;
OS.SetCursor (hCursor);
}
void setCheckboxImageList () {
if ((style & SWT.CHECK) == 0) return;
int count = 5;
int height = OS.SendMessage (handle, OS.TVM_GETITEMHEIGHT, 0, 0), width = height;
int flags = ImageList.COLOR_FLAGS;
if (OS.COMCTL32_MAJOR < 6 || !OS.IsAppThemed ()) flags |= OS.ILC_MASK;
if ((style & SWT.RIGHT_TO_LEFT) != 0) flags |= OS.ILC_MIRROR;
int hImageList = OS.ImageList_Create (width, height, flags, count, count);
int hDC = OS.GetDC (handle);
int memDC = OS.CreateCompatibleDC (hDC);
int hBitmap = OS.CreateCompatibleBitmap (hDC, width * count, height);
int hOldBitmap = OS.SelectObject (memDC, hBitmap);
RECT rect = new RECT ();
OS.SetRect (rect, 0, 0, width * count, height);
int clrBackground = _getBackgroundPixel ();
int hBrush = OS.CreateSolidBrush (clrBackground);
OS.FillRect (memDC, rect, hBrush);
OS.DeleteObject (hBrush);
int oldFont = OS.SelectObject (hDC, defaultFont ());
TEXTMETRIC tm = OS.IsUnicode ? (TEXTMETRIC) new TEXTMETRICW () : new TEXTMETRICA ();
OS.GetTextMetrics (hDC, tm);
OS.SelectObject (hDC, oldFont);
int itemWidth = Math.min (tm.tmHeight, width);
int itemHeight = Math.min (tm.tmHeight, height);
int left = (width - itemWidth) / 2, top = (height - itemHeight) / 2 + 1;
OS.SetRect (rect, left + width, top, left + width + itemWidth, top + itemHeight);
if (OS.COMCTL32_MAJOR >= 6 && OS.IsAppThemed ()) {
int hTheme = OS.OpenThemeData (handle, BUTTON);
OS.DrawThemeBackground (hTheme, memDC, OS.BP_CHECKBOX, OS.CBS_UNCHECKEDNORMAL, rect, null);
rect.left += width; rect.right += width;
OS.DrawThemeBackground (hTheme, memDC, OS.BP_CHECKBOX, OS.CBS_CHECKEDNORMAL, rect, null);
rect.left += width; rect.right += width;
OS.DrawThemeBackground (hTheme, memDC, OS.BP_CHECKBOX, OS.CBS_UNCHECKEDNORMAL, rect, null);
rect.left += width; rect.right += width;
OS.DrawThemeBackground (hTheme, memDC, OS.BP_CHECKBOX, OS.CBS_MIXEDNORMAL, rect, null);
OS.CloseThemeData (hTheme);
} else {
OS.DrawFrameControl (memDC, rect, OS.DFC_BUTTON, OS.DFCS_BUTTONCHECK | OS.DFCS_FLAT);
rect.left += width; rect.right += width;
OS.DrawFrameControl (memDC, rect, OS.DFC_BUTTON, OS.DFCS_BUTTONCHECK | OS.DFCS_CHECKED | OS.DFCS_FLAT);
rect.left += width; rect.right += width;
OS.DrawFrameControl (memDC, rect, OS.DFC_BUTTON, OS.DFCS_BUTTONCHECK | OS.DFCS_INACTIVE | OS.DFCS_FLAT);
rect.left += width; rect.right += width;
OS.DrawFrameControl (memDC, rect, OS.DFC_BUTTON, OS.DFCS_BUTTONCHECK | OS.DFCS_CHECKED | OS.DFCS_INACTIVE | OS.DFCS_FLAT);
}
OS.SelectObject (memDC, hOldBitmap);
OS.DeleteDC (memDC);
OS.ReleaseDC (handle, hDC);
if (OS.COMCTL32_MAJOR >= 6 && OS.IsAppThemed ()) {
OS.ImageList_Add (hImageList, hBitmap, 0);
} else {
OS.ImageList_AddMasked (hImageList, hBitmap, clrBackground);
}
OS.DeleteObject (hBitmap);
int hOldList = OS.SendMessage (handle, OS.TVM_GETIMAGELIST, OS.TVSIL_STATE, 0);
OS.SendMessage (handle, OS.TVM_SETIMAGELIST, OS.TVSIL_STATE, hImageList);
if (hOldList != 0) OS.ImageList_Destroy (hOldList);
}
void setForegroundPixel (int pixel) {
if (foreground == pixel) return;
foreground = pixel;
OS.SendMessage (handle, OS.TVM_SETTEXTCOLOR, 0, pixel);
}
/**
* Marks the receiver's header as visible if the argument is <code>true</code>,
* and marks it invisible otherwise.
* <p>
* If one of the receiver's ancestors is not visible or some
* other condition makes the receiver not visible, marking
* it visible may not actually cause it to be displayed.
* </p>
*
* @param show the new visibility state
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @since 3.1
*/
public void setHeaderVisible (boolean show) {
checkWidget ();
if (hwndHeader == 0) {
if (!show) return;
createParent ();
}
int bits = OS.GetWindowLong (hwndHeader, OS.GWL_STYLE);
if (show) {
if ((bits & OS.HDS_HIDDEN) == 0) return;
bits &= ~OS.HDS_HIDDEN;
OS.SetWindowLong (hwndHeader, OS.GWL_STYLE, bits);
OS.ShowWindow (hwndHeader, OS.SW_SHOW);
} else {
if ((bits & OS.HDS_HIDDEN) != 0) return;
bits |= OS.HDS_HIDDEN;
OS.SetWindowLong (hwndHeader, OS.GWL_STYLE, bits);
OS.ShowWindow (hwndHeader, OS.SW_HIDE);
}
setScrollWidth ();
updateScrollBar ();
}
public void setRedraw (boolean redraw) {
checkWidget ();
/*
* Bug in Windows. For some reason, when WM_SETREDRAW
* is used to turn redraw on for a tree and the tree
* contains no items, the last item in the tree does
* not redraw properly. If the tree has only one item,
* that item is not drawn. If another window is dragged
* on top of the item, parts of the item are redrawn
* and erased at random. The fix is to ensure that this
* case doesn't happen by inserting and deleting an item
* when redraw is turned on and there are no items in
* the tree.
*/
int hItem = 0;
if (redraw && drawCount == 1) {
int count = OS.SendMessage (handle, OS.TVM_GETCOUNT, 0, 0);
if (count == 0) {
TVINSERTSTRUCT tvInsert = new TVINSERTSTRUCT ();
tvInsert.hInsertAfter = OS.TVI_FIRST;
hItem = OS.SendMessage (handle, OS.TVM_INSERTITEM, 0, tvInsert);
}
}
super.setRedraw (redraw);
if (hItem != 0) {
OS.SendMessage (handle, OS.TVM_DELETEITEM, 0, hItem);
}
}
void setScrollWidth () {
if (hwndHeader == 0 || hwndParent == 0) return;
int width = 0;
HDITEM hdItem = new HDITEM ();
int count = OS.SendMessage (hwndHeader, OS.HDM_GETITEMCOUNT, 0, 0);
for (int i=0; i<count; i++) {
hdItem.mask = OS.HDI_WIDTH;
OS.SendMessage (hwndHeader, OS.HDM_GETITEM, i, hdItem);
width += hdItem.cxy;
}
int left = 0;
RECT rect = new RECT ();
SCROLLINFO info = new SCROLLINFO ();
info.cbSize = SCROLLINFO.sizeof;
info.fMask = OS.SIF_RANGE | OS.SIF_PAGE;
if (count == 0) {
OS.GetScrollInfo (hwndParent, OS.SB_HORZ, info);
info.nPage = info.nMax + 1;
OS.SetScrollInfo (hwndParent, OS.SB_HORZ, info, true);
OS.GetScrollInfo (hwndParent, OS.SB_VERT, info);
info.nPage = info.nMax + 1;
OS.SetScrollInfo (hwndParent, OS.SB_VERT, info, true);
} else {
OS.GetClientRect (hwndParent, rect);
OS.GetScrollInfo (hwndParent, OS.SB_HORZ, info);
info.nMax = width;
info.nPage = rect.right - rect.left;
OS.SetScrollInfo (hwndParent, OS.SB_HORZ, info, true);
info.fMask = OS.SIF_POS;
OS.GetScrollInfo (hwndParent, OS.SB_HORZ, info);
left = info.nPos;
}
OS.GetClientRect (hwndParent, rect);
int hHeap = OS.GetProcessHeap ();
HDLAYOUT playout = new HDLAYOUT ();
playout.prc = OS.HeapAlloc (hHeap, OS.HEAP_ZERO_MEMORY, RECT.sizeof);
playout.pwpos = OS.HeapAlloc (hHeap, OS.HEAP_ZERO_MEMORY, WINDOWPOS.sizeof);
OS.MoveMemory (playout.prc, rect, RECT.sizeof);
OS.SendMessage (hwndHeader, OS.HDM_LAYOUT, 0, playout);
WINDOWPOS pos = new WINDOWPOS ();
OS.MoveMemory (pos, playout.pwpos, WINDOWPOS.sizeof);
if (playout.prc != 0) OS.HeapFree (hHeap, 0, playout.prc);
if (playout.pwpos != 0) OS.HeapFree (hHeap, 0, playout.pwpos);
SetWindowPos (hwndHeader, OS.HWND_TOP, pos.x - left, pos.y, pos.cx + left, pos.cy, OS.SWP_NOACTIVATE);
int w = pos.cx + (count == 0 ? 0 : OS.GetSystemMetrics (OS.SM_CXVSCROLL));
int h = rect.bottom - rect.top - pos.cy;
boolean oldIgnore = ignoreResize;
ignoreResize = true;
SetWindowPos (handle, 0, pos.x - left, pos.y + pos.cy, w + left, h, OS.SWP_NOACTIVATE | OS.SWP_NOZORDER);
ignoreResize = oldIgnore;
}
/**
* Sets the receiver's selection to be the given array of items.
* The current selection is cleared before the new items are selected.
* <p>
* Items that are not in the receiver are ignored.
* If the receiver is single-select and multiple items are specified,
* then all items are ignored.
*
* @param items the array of items
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the array of items is null</li>
* <li>ERROR_INVALID_ARGUMENT - if one of the items has been disposed</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see Tree#deselectAll()
*/
public void setSelection (TreeItem [] items) {
checkWidget ();
if (items == null) error (SWT.ERROR_NULL_ARGUMENT);
int length = items.length;
if (length == 0 || ((style & SWT.SINGLE) != 0 && length > 1)) {
deselectAll();
return;
}
/* Select/deselect the first item */
TreeItem item = items [0];
if (item != null) {
if (item.isDisposed ()) error (SWT.ERROR_INVALID_ARGUMENT);
int hOldItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
int hNewItem = hAnchor = item.handle;
/*
* Bug in Windows. When TVM_SELECTITEM is used to select and
* scroll an item to be visible and the client area of the tree
* is smaller that the size of one item, TVM_SELECTITEM makes
* the next item in the tree visible by making it the top item
* instead of making the desired item visible. The fix is to
* detect the case when the client area is too small and make
* the desired visible item be the top item in the tree.
*
* Note that TVM_SELECTITEM when called with TVGN_FIRSTVISIBLE
* also requires the work around for scrolling.
*/
boolean fixScroll = checkScroll (hNewItem);
if (fixScroll) {
OS.SendMessage (handle, OS.WM_SETREDRAW, 1, 0);
OS.DefWindowProc (handle, OS.WM_SETREDRAW, 0, 0);
}
ignoreSelect = true;
OS.SendMessage (handle, OS.TVM_SELECTITEM, OS.TVGN_CARET, hNewItem);
ignoreSelect = false;
if (OS.SendMessage (handle, OS.TVM_GETVISIBLECOUNT, 0, 0) == 0) {
OS.SendMessage (handle, OS.TVM_SELECTITEM, OS.TVGN_FIRSTVISIBLE, hNewItem);
}
if (fixScroll) {
OS.DefWindowProc (handle, OS.WM_SETREDRAW, 1, 0);
OS.SendMessage (handle, OS.WM_SETREDRAW, 0, 0);
}
/*
* Feature in Windows. When the old and new focused item
* are the same, Windows does not check to make sure that
* the item is actually selected, not just focused. The
* fix is to force the item to draw selected by setting
* the state mask, and to ensure that it is visible.
*/
if (hOldItem == hNewItem) {
TVITEM tvItem = new TVITEM ();
tvItem.mask = OS.TVIF_STATE;
tvItem.state = OS.TVIS_SELECTED;
tvItem.stateMask = OS.TVIS_SELECTED;
tvItem.hItem = hNewItem;
OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
showItem (hNewItem);
}
}
if ((style & SWT.SINGLE) != 0) return;
/* Select/deselect the rest of the items */
TVITEM tvItem = new TVITEM ();
tvItem.mask = OS.TVIF_STATE;
tvItem.stateMask = OS.TVIS_SELECTED;
int oldProc = OS.GetWindowLong (handle, OS.GWL_WNDPROC);
OS.SetWindowLong (handle, OS.GWL_WNDPROC, TreeProc);
for (int i=0; i<this.items.length; i++) {
item = this.items [i];
if (item != null) {
int index = 0;
while (index < length) {
if (items [index] == item) break;
index++;
}
tvItem.hItem = item.handle;
OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
if ((tvItem.state & OS.TVIS_SELECTED) != 0) {
if (index == length) {
tvItem.state = 0;
OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
}
} else {
if (index != length) {
tvItem.state = OS.TVIS_SELECTED;
OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
}
}
}
}
OS.SetWindowLong (handle, OS.GWL_WNDPROC, oldProc);
}
/**
* Sets the item which is currently at the top of the receiver.
* This item can change when items are expanded, collapsed, scrolled
* or new items are added or removed.
*
* @param item the item to be shown
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the item is null</li>
* <li>ERROR_INVALID_ARGUMENT - if the item has been disposed</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see Tree#getTopItem()
*
* @since 2.1
*/
public void setTopItem (TreeItem item) {
checkWidget ();
if (item == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
if (item.isDisposed ()) SWT.error (SWT.ERROR_INVALID_ARGUMENT);
int hItem = item.handle;
boolean fixScroll = checkScroll (hItem);
if (fixScroll) {
OS.SendMessage (handle, OS.WM_SETREDRAW, 1, 0);
OS.DefWindowProc (handle, OS.WM_SETREDRAW, 0, 0);
}
OS.SendMessage (handle, OS.TVM_SELECTITEM, OS.TVGN_FIRSTVISIBLE, hItem);
if (fixScroll) {
OS.DefWindowProc (handle, OS.WM_SETREDRAW, 1, 0);
OS.SendMessage (handle, OS.WM_SETREDRAW, 0, 0);
}
updateScrollBar ();
}
void showItem (int hItem) {
/*
* Bug in Windows. When TVM_ENSUREVISIBLE is used to ensure
* that an item is visible and the client area of the tree is
* smaller that the size of one item, TVM_ENSUREVISIBLE makes
* the next item in the tree visible by making it the top item
* instead of making the desired item visible. The fix is to
* detect the case when the client area is too small and make
* the desired visible item be the top item in the tree.
*/
if (OS.SendMessage (handle, OS.TVM_GETVISIBLECOUNT, 0, 0) == 0) {
boolean fixScroll = checkScroll (hItem);
if (fixScroll) {
OS.SendMessage (handle, OS.WM_SETREDRAW, 1, 0);
OS.DefWindowProc (handle, OS.WM_SETREDRAW, 0, 0);
}
OS.SendMessage (handle, OS.TVM_SELECTITEM, OS.TVGN_FIRSTVISIBLE, hItem);
OS.SendMessage (handle, OS.WM_HSCROLL, OS.SB_TOP, 0);
if (fixScroll) {
OS.DefWindowProc (handle, OS.WM_SETREDRAW, 1, 0);
OS.SendMessage (handle, OS.WM_SETREDRAW, 0, 0);
}
} else {
boolean scroll = true;
RECT itemRect = new RECT ();
itemRect.left = hItem;
if (OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, itemRect) != 0) {
forceResize ();
RECT rect = new RECT ();
OS.GetClientRect (handle, rect);
POINT pt = new POINT ();
pt.x = itemRect.left;
pt.y = itemRect.top;
if (OS.PtInRect (rect, pt)) {
pt.y = itemRect.bottom;
if (OS.PtInRect (rect, pt)) scroll = false;
}
}
if (scroll) {
boolean fixScroll = checkScroll (hItem);
if (fixScroll) {
OS.SendMessage (handle, OS.WM_SETREDRAW, 1, 0);
OS.DefWindowProc (handle, OS.WM_SETREDRAW, 0, 0);
}
OS.SendMessage (handle, OS.TVM_ENSUREVISIBLE, 0, hItem);
if (fixScroll) {
OS.DefWindowProc (handle, OS.WM_SETREDRAW, 1, 0);
OS.SendMessage (handle, OS.WM_SETREDRAW, 0, 0);
}
}
}
if (hwndParent != 0) {
RECT itemRect = new RECT ();
itemRect.left = hItem;
if (OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, itemRect) != 0) {
forceResize ();
RECT rect = new RECT ();
OS.GetClientRect (hwndParent, rect);
OS.MapWindowPoints (hwndParent, handle, rect, 2);
POINT pt = new POINT ();
pt.x = itemRect.left;
pt.y = itemRect.top;
if (!OS.PtInRect (rect, pt)) {
pt.y = itemRect.bottom;
if (!OS.PtInRect (rect, pt)) {
SCROLLINFO info = new SCROLLINFO ();
info.cbSize = SCROLLINFO.sizeof;
info.fMask = OS.SIF_POS;
info.nPos = Math.max (0, pt.x - Tree.INSET / 2);
OS.SetScrollInfo (hwndParent, OS.SB_HORZ, info, true);
setScrollWidth ();
}
}
}
}
updateScrollBar ();
}
/**
* Shows the column. If the column is already showing in the receiver,
* this method simply returns. Otherwise, the columns are scrolled until
* the column is visible.
*
* @param column the column to be shown
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the item is null</li>
* <li>ERROR_INVALID_ARGUMENT - if the item has been disposed</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @since 3.1
*/
public void showColumn (TreeColumn column) {
checkWidget ();
if (column == null) error (SWT.ERROR_NULL_ARGUMENT);
if (column.isDisposed ()) error(SWT.ERROR_INVALID_ARGUMENT);
if (column.parent != this) return;
int index = indexOf (column);
if (index == -1) return;
int count = OS.SendMessage (hwndHeader, OS.HDM_GETITEMCOUNT, 0, 0);
if (0 <= index && index < count) {
if (hwndParent != 0) {
forceResize ();
RECT rect = new RECT ();
OS.GetClientRect (hwndParent, rect);
OS.MapWindowPoints (hwndParent, handle, rect, 2);
int x = 0;
HDITEM hdItem = new HDITEM ();
for (int i=0; i<index; i++) {
hdItem.mask = OS.HDI_WIDTH;
OS.SendMessage (hwndHeader, OS.HDM_GETITEM, i, hdItem);
x += hdItem.cxy;
}
POINT pt = new POINT ();
pt.x = x;
pt.y = rect.top;
if (!OS.PtInRect (rect, pt)) {
SCROLLINFO info = new SCROLLINFO ();
info.cbSize = SCROLLINFO.sizeof;
info.fMask = OS.SIF_POS;
info.nPos = Math.max (0, pt.x - Tree.INSET / 2);
OS.SetScrollInfo (hwndParent, OS.SB_HORZ, info, true);
setScrollWidth ();
}
}
}
}
/**
* Shows the item. If the item is already showing in the receiver,
* this method simply returns. Otherwise, the items are scrolled
* and expanded until the item is visible.
*
* @param item the item to be shown
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the item is null</li>
* <li>ERROR_INVALID_ARGUMENT - if the item has been disposed</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see Tree#showSelection()
*/
public void showItem (TreeItem item) {
checkWidget ();
if (item == null) error (SWT.ERROR_NULL_ARGUMENT);
if (item.isDisposed ()) error(SWT.ERROR_INVALID_ARGUMENT);
showItem (item.handle);
}
/**
* Shows the selection. If the selection is already showing in the receiver,
* this method simply returns. Otherwise, the items are scrolled until
* the selection is visible.
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see Tree#showItem(TreeItem)
*/
public void showSelection () {
checkWidget ();
int hItem = 0;
if ((style & SWT.SINGLE) != 0) {
hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
if (hItem == 0) return;
TVITEM tvItem = new TVITEM ();
tvItem.mask = OS.TVIF_STATE;
tvItem.hItem = hItem;
OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
if ((tvItem.state & OS.TVIS_SELECTED) == 0) return;
} else {
TVITEM tvItem = new TVITEM ();
tvItem.mask = OS.TVIF_STATE;
int oldProc = OS.GetWindowLong (handle, OS.GWL_WNDPROC);
OS.SetWindowLong (handle, OS.GWL_WNDPROC, TreeProc);
int index = 0;
while (index <items.length) {
TreeItem item = items [index];
if (item != null) {
tvItem.hItem = item.handle;
OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
if ((tvItem.state & OS.TVIS_SELECTED) != 0) {
hItem = tvItem.hItem;
break;
}
}
index++;
}
OS.SetWindowLong (handle, OS.GWL_WNDPROC, oldProc);
}
if (hItem != 0) showItem (hItem);
}
void showWidget (boolean visible) {
super.showWidget (visible);
if (hwndParent != 0) {
OS.ShowWindow (hwndParent, visible ? OS.SW_SHOW : OS.SW_HIDE);
}
}
String toolTipText (NMTTDISPINFO hdr) {
int hwndToolTip = OS.SendMessage (handle, OS.TVM_GETTOOLTIPS, 0, 0);
if (hwndToolTip == hdr.hwndFrom && toolTipText != null) return ""; //$NON-NLS-1$
return super.toolTipText (hdr);
}
int topHandle () {
return hwndParent != 0 ? hwndParent : handle;
}
void updateScrollBar () {
if (hwndParent != 0) {
int columnCount = OS.SendMessage (hwndHeader, OS.HDM_GETITEMCOUNT, 0, 0);
if (columnCount != 0) {
SCROLLINFO info = new SCROLLINFO ();
info.cbSize = SCROLLINFO.sizeof;
info.fMask = OS.SIF_ALL;
int itemCount = OS.SendMessage (handle, OS.TVM_GETCOUNT, 0, 0);
if (itemCount == 0) {
OS.GetScrollInfo (hwndParent, OS.SB_VERT, info);
info.nPage = info.nMax + 1;
OS.SetScrollInfo (hwndParent, OS.SB_VERT, info, true);
} else {
OS.GetScrollInfo (handle, OS.SB_VERT, info);
OS.SetScrollInfo (hwndParent, OS.SB_VERT, info, true);
}
}
}
}
int widgetStyle () {
int bits = super.widgetStyle () | OS.TVS_SHOWSELALWAYS | OS.TVS_LINESATROOT | OS.TVS_HASBUTTONS;
if ((style & SWT.FULL_SELECTION) != 0) {
bits |= OS.TVS_FULLROWSELECT;
} else {
bits |= OS.TVS_HASLINES;
}
// bits |= OS.TVS_NOTOOLTIPS;
return bits;
}
TCHAR windowClass () {
return TreeClass;
}
int windowProc () {
return TreeProc;
}
int windowProc (int hwnd, int msg, int wParam, int lParam) {
if (hwndParent != 0 && hwnd == hwndParent) {
switch (msg) {
case OS.WM_MOVE: {
sendEvent (SWT.Move);
return 0;
}
case OS.WM_SIZE: {
setScrollWidth ();
if (ignoreResize) return 0;
setResizeChildren (false);
int code = callWindowProc (hwnd, OS.WM_SIZE, wParam, lParam);
sendEvent (SWT.Resize);
if (isDisposed ()) return 0;
if (layout != null) {
markLayout (false, false);
updateLayout (false, false);
}
setResizeChildren (true);
return code;
}
case OS.WM_COMMAND:
case OS.WM_NOTIFY:
case OS.WM_SYSCOLORCHANGE: {
return OS.SendMessage (handle, msg, wParam, lParam);
}
case OS.WM_VSCROLL: {
SCROLLINFO info = new SCROLLINFO ();
info.cbSize = SCROLLINFO.sizeof;
info.fMask = OS.SIF_ALL;
OS.GetScrollInfo (hwndParent, OS.SB_VERT, info);
OS.SetScrollInfo (handle, OS.SB_VERT, info, true);
int code = OS.SendMessage (handle, OS.WM_VSCROLL, wParam, lParam);
OS.GetScrollInfo (handle, OS.SB_VERT, info);
OS.SetScrollInfo (hwndParent, OS.SB_VERT, info, true);
return code;
}
case OS.WM_HSCROLL: {
/*
* Bug on WinCE. lParam should be NULL when the message is not sent
* by a scroll bar control, but it contains the handle to the window.
* When the message is sent by a scroll bar control, it correctly
* contains the handle to the scroll bar. The fix is to check for
* both.
*/
if (horizontalBar != null && (lParam == 0 || lParam == hwndParent)) {
wmScroll (horizontalBar, true, hwndParent, OS.WM_HSCROLL, wParam, lParam);
}
setScrollWidth ();
break;
}
}
return callWindowProc (hwnd, msg, wParam, lParam);
}
int code = super.windowProc (handle, msg, wParam, lParam);
switch (msg) {
/* Keyboard messages */
case OS.WM_CHAR:
case OS.WM_IME_CHAR:
case OS.WM_KEYDOWN:
case OS.WM_KEYUP:
case OS.WM_SYSCHAR:
case OS.WM_SYSKEYDOWN:
case OS.WM_SYSKEYUP:
/* Mouse messages */
case OS.WM_LBUTTONDBLCLK:
case OS.WM_LBUTTONDOWN:
case OS.WM_LBUTTONUP:
case OS.WM_MBUTTONDBLCLK:
case OS.WM_MBUTTONDOWN:
case OS.WM_MBUTTONUP:
case OS.WM_MOUSEHOVER:
case OS.WM_MOUSELEAVE:
case OS.WM_MOUSEMOVE:
case OS.WM_MOUSEWHEEL:
case OS.WM_RBUTTONDBLCLK:
case OS.WM_RBUTTONDOWN:
case OS.WM_RBUTTONUP:
case OS.WM_XBUTTONDBLCLK:
case OS.WM_XBUTTONDOWN:
case OS.WM_XBUTTONUP:
/* Other messages */
case OS.WM_SIZE:
case OS.WM_SETFONT:
case OS.WM_TIMER: {
updateScrollBar ();
}
}
return code;
}
LRESULT WM_CHAR (int wParam, int lParam) {
LRESULT result = super.WM_CHAR (wParam, lParam);
if (result != null) return result;
/*
* Feature in Windows. The tree control beeps
* in WM_CHAR when the search for the item that
* matches the key stroke fails. This is the
* standard tree behavior but is unexpected when
* the key that was typed was ESC, CR or SPACE.
* The fix is to avoid calling the tree window
* proc in these cases.
*/
switch (wParam) {
case ' ': {
int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
if (hItem != 0) {
hAnchor = hItem;
OS.SendMessage (handle, OS.TVM_ENSUREVISIBLE, 0, hItem);
TVITEM tvItem = new TVITEM ();
tvItem.mask = OS.TVIF_STATE | OS.TVIF_PARAM;
tvItem.hItem = hItem;
if ((style & SWT.CHECK) != 0) {
tvItem.stateMask = OS.TVIS_STATEIMAGEMASK;
OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
int state = tvItem.state >> 12;
if ((state & 0x1) != 0) {
state++;
} else {
--state;
}
tvItem.state = state << 12;
OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
if (!OS.IsWinCE) {
int id = hItem;
if (OS.COMCTL32_MAJOR >= 6) {
id = OS.SendMessage (handle, OS.TVM_MAPHTREEITEMTOACCID, hItem, 0);
}
OS.NotifyWinEvent (OS.EVENT_OBJECT_FOCUS, handle, OS.OBJID_CLIENT, id);
}
}
tvItem.stateMask = OS.TVIS_SELECTED;
OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
if ((style & SWT.MULTI) != 0 && OS.GetKeyState (OS.VK_CONTROL) < 0) {
if ((tvItem.state & OS.TVIS_SELECTED) != 0) {
tvItem.state &= ~OS.TVIS_SELECTED;
} else {
tvItem.state |= OS.TVIS_SELECTED;
}
} else {
tvItem.state |= OS.TVIS_SELECTED;
}
OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
Event event = new Event ();
event.item = items [tvItem.lParam];
postEvent (SWT.Selection, event);
if ((style & SWT.CHECK) != 0) {
event = new Event ();
event.item = items [tvItem.lParam];
event.detail = SWT.CHECK;
postEvent (SWT.Selection, event);
}
}
return LRESULT.ZERO;
}
case SWT.CR: {
/*
* Feature in Windows. Windows sends NM_RETURN from WM_KEYDOWN
* instead of using WM_CHAR. This means that application code
* that expects to consume the key press and therefore avoid a
* SWT.DefaultSelection event from WM_CHAR will fail. The fix
* is to implement SWT.DefaultSelection in WM_CHAR instead of
* using NM_RETURN.
*/
Event event = new Event ();
int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
if (hItem != 0) {
TVITEM tvItem = new TVITEM ();
tvItem.hItem = hItem;
tvItem.mask = OS.TVIF_PARAM;
OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
event.item = items [tvItem.lParam];
}
postEvent (SWT.DefaultSelection, event);
return LRESULT.ZERO;
}
case SWT.ESC:
return LRESULT.ZERO;
}
return result;
}
LRESULT WM_GETOBJECT (int wParam, int lParam) {
/*
* Ensure that there is an accessible object created for this
* control because support for checked item and tree column
* accessibility is temporarily implemented in the accessibility
* package.
*/
if ((style & SWT.CHECK) != 0 || hwndParent != 0) {
if (accessible == null) accessible = new_Accessible (this);
}
return super.WM_GETOBJECT (wParam, lParam);
}
LRESULT WM_KEYDOWN (int wParam, int lParam) {
LRESULT result = super.WM_KEYDOWN (wParam, lParam);
if (result != null) return result;
switch (wParam) {
case OS.VK_SPACE:
/*
* Ensure that the window proc does not process VK_SPACE
* so that it can be handled in WM_CHAR. This allows the
* application to cancel an operation that is normally
* performed in WM_KEYDOWN from WM_CHAR.
*/
return LRESULT.ZERO;
case OS.VK_UP:
case OS.VK_DOWN:
case OS.VK_PRIOR:
case OS.VK_NEXT:
case OS.VK_HOME:
case OS.VK_END: {
OS.SendMessage (handle, OS.WM_CHANGEUISTATE, OS.UIS_INITIALIZE, 0);
if ((style & SWT.SINGLE) != 0) break;
if (OS.GetKeyState (OS.VK_SHIFT) < 0) {
int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
if (hItem != 0) {
if (hAnchor == 0) hAnchor = hItem;
ignoreSelect = ignoreDeselect = true;
int code = callWindowProc (handle, OS.WM_KEYDOWN, wParam, lParam);
ignoreSelect = ignoreDeselect = false;
int hNewItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
TVITEM tvItem = new TVITEM ();
tvItem.mask = OS.TVIF_STATE;
tvItem.stateMask = OS.TVIS_SELECTED;
int hDeselectItem = hItem;
RECT rect1 = new RECT ();
rect1.left = hAnchor;
OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect1);
RECT rect2 = rect2 = new RECT ();
rect2.left = hDeselectItem;
OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect2);
int flags = rect1.top < rect2.top ? OS.TVGN_PREVIOUSVISIBLE : OS.TVGN_NEXTVISIBLE;
while (hDeselectItem != hAnchor) {
tvItem.hItem = hDeselectItem;
OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
hDeselectItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, flags, hDeselectItem);
}
int hSelectItem = hAnchor;
rect1.left = hNewItem;
OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect1);
rect2.left = hSelectItem;
OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect2);
tvItem.state = OS.TVIS_SELECTED;
flags = rect1.top < rect2.top ? OS.TVGN_PREVIOUSVISIBLE : OS.TVGN_NEXTVISIBLE;
while (hSelectItem != hNewItem) {
tvItem.hItem = hSelectItem;
OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
hSelectItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, flags, hSelectItem);
}
tvItem.hItem = hNewItem;
OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
tvItem.mask = OS.TVIF_PARAM;
tvItem.hItem = hNewItem;
OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
Event event = new Event ();
event.item = items [tvItem.lParam];
postEvent (SWT.Selection, event);
return new LRESULT (code);
}
}
if (OS.GetKeyState (OS.VK_CONTROL) < 0) {
int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
if (hItem != 0) {
TVITEM tvItem = new TVITEM ();
tvItem.mask = OS.TVIF_STATE;
tvItem.stateMask = OS.TVIS_SELECTED;
tvItem.hItem = hItem;
OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
boolean oldSelected = (tvItem.state & OS.TVIS_SELECTED) != 0;
int hNewItem = 0;
switch (wParam) {
case OS.VK_UP:
hNewItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_PREVIOUSVISIBLE, hItem);
break;
case OS.VK_DOWN:
hNewItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_NEXTVISIBLE, hItem);
break;
case OS.VK_HOME:
hNewItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_ROOT, 0);
break;
case OS.VK_PRIOR:
hNewItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_FIRSTVISIBLE, 0);
if (hNewItem == hItem) {
OS.SendMessage (handle, OS.WM_VSCROLL, OS.SB_PAGEUP, 0);
hNewItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_FIRSTVISIBLE, 0);
}
break;
case OS.VK_NEXT:
RECT rect = new RECT (), clientRect = new RECT ();
OS.GetClientRect (handle, clientRect);
hNewItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_FIRSTVISIBLE, 0);
do {
int hVisible = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_NEXTVISIBLE, hNewItem);
if (hVisible == 0) break;
rect.left = hVisible;
OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect);
if (rect.bottom > clientRect.bottom) break;
if ((hNewItem = hVisible) == hItem) {
OS.SendMessage (handle, OS.WM_VSCROLL, OS.SB_PAGEDOWN, 0);
}
} while (hNewItem != 0);
break;
case OS.VK_END:
hNewItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_LASTVISIBLE, 0);
break;
}
if (hNewItem != 0) {
OS.SendMessage (handle, OS.TVM_ENSUREVISIBLE, 0, hNewItem);
tvItem.hItem = hNewItem;
OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
boolean newSelected = (tvItem.state & OS.TVIS_SELECTED) != 0;
if (!newSelected && drawCount == 0) {
OS.UpdateWindow (handle);
OS.DefWindowProc (handle, OS.WM_SETREDRAW, 0, 0);
/*
* This code is intentionally commented.
*/
// OS.SendMessage (handle, OS.WM_SETREDRAW, 0, 0);
}
ignoreSelect = true;
OS.SendMessage (handle, OS.TVM_SELECTITEM, OS.TVGN_CARET, hNewItem);
ignoreSelect = false;
if (oldSelected) {
tvItem.state = OS.TVIS_SELECTED;
tvItem.hItem = hItem;
OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
}
if (!newSelected) {
tvItem.state = 0;
tvItem.hItem = hNewItem;
OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
}
if (!newSelected && drawCount == 0) {
RECT rect1 = new RECT (), rect2 = new RECT ();
rect1.left = hItem; rect2.left = hNewItem;
int bits = OS.GetWindowLong (handle, OS.GWL_STYLE);
int fItemRect = (bits & OS.TVS_FULLROWSELECT) != 0 ? 0 : 1;
OS.SendMessage (handle, OS.TVM_GETITEMRECT, fItemRect, rect1);
OS.SendMessage (handle, OS.TVM_GETITEMRECT, fItemRect, rect2);
/*
* This code is intentionally commented.
*/
// OS.SendMessage (handle, OS.WM_SETREDRAW, 1, 0);
OS.DefWindowProc (handle, OS.WM_SETREDRAW, 1, 0);
if (OS.IsWinCE) {
OS.InvalidateRect (handle, rect1, false);
OS.InvalidateRect (handle, rect2, false);
OS.UpdateWindow (handle);
} else {
int flags = OS.RDW_UPDATENOW | OS.RDW_INVALIDATE;
OS.RedrawWindow (handle, rect1, 0, flags);
OS.RedrawWindow (handle, rect2, 0, flags);
}
}
return LRESULT.ZERO;
}
}
}
int code = callWindowProc (handle, OS.WM_KEYDOWN, wParam, lParam);
hAnchor = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
return new LRESULT (code);
}
}
return result;
}
LRESULT WM_KILLFOCUS (int wParam, int lParam) {
LRESULT result = super.WM_KILLFOCUS (wParam, lParam);
if ((style & SWT.SINGLE) != 0) return result;
/*
* Feature in Windows. When multiple item have
* the TVIS_SELECTED state, Windows redraws only
* the focused item in the color used to show the
* selection when the tree loses or gains focus.
* The fix is to force Windows to redraw all the
* visible items when focus is gained or lost.
*/
OS.InvalidateRect (handle, null, false);
return result;
}
LRESULT WM_LBUTTONDBLCLK (int wParam, int lParam) {
TVHITTESTINFO lpht = new TVHITTESTINFO ();
lpht.x = (short) (lParam & 0xFFFF);
lpht.y = (short) (lParam >> 16);
OS.SendMessage (handle, OS.TVM_HITTEST, 0, lpht);
if ((style & SWT.CHECK) != 0) {
if ((lpht.flags & OS.TVHT_ONITEMSTATEICON) != 0) {
sendMouseEvent (SWT.MouseDown, 1, handle, OS.WM_LBUTTONDOWN, wParam, lParam);
sendMouseEvent (SWT.MouseDoubleClick, 1, handle, OS.WM_LBUTTONDBLCLK, wParam, lParam);
if (OS.GetCapture () != handle) OS.SetCapture (handle);
TVITEM tvItem = new TVITEM ();
tvItem.hItem = lpht.hItem;
tvItem.mask = OS.TVIF_PARAM | OS.TVIF_STATE;
tvItem.stateMask = OS.TVIS_STATEIMAGEMASK;
OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
int state = tvItem.state >> 12;
if ((state & 0x1) != 0) {
state++;
} else {
--state;
}
tvItem.state = state << 12;
OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
if (!OS.IsWinCE) {
int id = tvItem.hItem;
if (OS.COMCTL32_MAJOR >= 6) {
id = OS.SendMessage (handle, OS.TVM_MAPHTREEITEMTOACCID, tvItem.hItem, 0);
}
OS.NotifyWinEvent (OS.EVENT_OBJECT_FOCUS, handle, OS.OBJID_CLIENT, id);
}
Event event = new Event ();
event.item = items [tvItem.lParam];
event.detail = SWT.CHECK;
postEvent (SWT.Selection, event);
return LRESULT.ZERO;
}
}
LRESULT result = super.WM_LBUTTONDBLCLK (wParam, lParam);
if (lpht.hItem != 0) {
if ((style & SWT.FULL_SELECTION) != 0 || (lpht.flags & OS.TVHT_ONITEM) != 0) {
Event event = new Event ();
TVITEM tvItem = new TVITEM ();
tvItem.hItem = lpht.hItem;
tvItem.mask = OS.TVIF_PARAM;
OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
event.item = items [tvItem.lParam];
postEvent (SWT.DefaultSelection, event);
}
}
return result;
}
LRESULT WM_LBUTTONDOWN (int wParam, int lParam) {
/*
* In a multi-select tree, if the user is collapsing a subtree that
* contains selected items, clear the selection from these items and
* issue a selection event. Only items that are selected and visible
* are cleared. This code also runs in the case when no item is selected.
*/
TVHITTESTINFO lpht = new TVHITTESTINFO ();
lpht.x = (short) (lParam & 0xFFFF);
lpht.y = (short) (lParam >> 16);
OS.SendMessage (handle, OS.TVM_HITTEST, 0, lpht);
if (lpht.hItem == 0 || (lpht.flags & OS.TVHT_ONITEMBUTTON) != 0) {
sendMouseEvent (SWT.MouseDown, 1, handle, OS.WM_LBUTTONDOWN, wParam, lParam);
boolean fixSelection = false, deselected = false;
if (lpht.hItem != 0 && (style & SWT.MULTI) != 0) {
int hSelection = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
if (hSelection != 0) {
TVITEM tvItem = new TVITEM ();
tvItem.mask = OS.TVIF_STATE | OS.TVIF_PARAM;
tvItem.hItem = lpht.hItem;
OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
if ((tvItem.state & OS.TVIS_EXPANDED) != 0) {
fixSelection = true;
tvItem.stateMask = OS.TVIS_SELECTED;
int hParent = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_PARENT, lpht.hItem);
int hLast = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_LASTVISIBLE, lpht.hItem);
int hNext = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_NEXTVISIBLE, lpht.hItem);
while (hNext != 0 && hNext != hLast) {
tvItem.hItem = hNext;
OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
if ((tvItem.state & OS.TVIS_SELECTED) != 0) deselected = true;
tvItem.state = 0;
OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
if ((hNext = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_NEXTVISIBLE, hNext)) == 0) break;
if (hParent == OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_PARENT, hNext)) break;
}
}
}
}
dragStarted = gestureCompleted = false;
if (fixSelection) ignoreDeselect = ignoreSelect = lockSelection = true;
int code = callWindowProc (handle, OS.WM_LBUTTONDOWN, wParam, lParam);
if (fixSelection) ignoreDeselect = ignoreSelect = lockSelection = false;
if (dragStarted && OS.GetCapture () != handle) OS.SetCapture (handle);
if (deselected) {
TVITEM tvItem = new TVITEM ();
tvItem.mask = OS.TVIF_PARAM;
tvItem.hItem = lpht.hItem;
OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
Event event = new Event ();
event.item = items [tvItem.lParam];
postEvent (SWT.Selection, event);
}
return new LRESULT (code);
}
/* Look for check/uncheck */
if ((style & SWT.CHECK) != 0) {
if ((lpht.flags & OS.TVHT_ONITEMSTATEICON) != 0) {
sendMouseEvent (SWT.MouseDown, 1, handle, OS.WM_LBUTTONDOWN, wParam, lParam);
if (OS.GetCapture () != handle) OS.SetCapture (handle);
TVITEM tvItem = new TVITEM ();
tvItem.hItem = lpht.hItem;
tvItem.mask = OS.TVIF_PARAM | OS.TVIF_STATE;
tvItem.stateMask = OS.TVIS_STATEIMAGEMASK;
OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
int state = tvItem.state >> 12;
if ((state & 0x1) != 0) {
state++;
} else {
--state;
}
tvItem.state = state << 12;
OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
if (!OS.IsWinCE) {
int id = tvItem.hItem;
if (OS.COMCTL32_MAJOR >= 6) {
id = OS.SendMessage (handle, OS.TVM_MAPHTREEITEMTOACCID, tvItem.hItem, 0);
}
OS.NotifyWinEvent (OS.EVENT_OBJECT_FOCUS, handle, OS.OBJID_CLIENT, id);
}
Event event = new Event ();
event.item = items [tvItem.lParam];
event.detail = SWT.CHECK;
postEvent (SWT.Selection, event);
return LRESULT.ZERO;
}
}
/* Get the selected state of the item under the mouse */
TVITEM tvItem = new TVITEM ();
tvItem.mask = OS.TVIF_STATE;
tvItem.stateMask = OS.TVIS_SELECTED;
boolean hittestSelected = false;
if ((style & SWT.MULTI) != 0) {
tvItem.hItem = lpht.hItem;
OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
hittestSelected = (tvItem.state & OS.TVIS_SELECTED) != 0;
}
/* Get the selected state of the last selected item */
int hOldItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
if ((style & SWT.MULTI) != 0) {
tvItem.hItem = hOldItem;
OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
/* Check for CONTROL or drag selection */
if (hittestSelected || (wParam & OS.MK_CONTROL) != 0) {
if (drawCount == 0) {
OS.UpdateWindow (handle);
OS.DefWindowProc (handle, OS.WM_SETREDRAW, 0, 0);
/*
* This code is intentionally commented.
*/
// OS.SendMessage (handle, OS.WM_SETREDRAW, 0, 0);
}
} else {
deselectAll ();
}
}
/* Do the selection */
sendMouseEvent (SWT.MouseDown, 1, handle, OS.WM_LBUTTONDOWN, wParam, lParam);
dragStarted = gestureCompleted = false;
ignoreDeselect = ignoreSelect = true;
int code = callWindowProc (handle, OS.WM_LBUTTONDOWN, wParam, lParam);
ignoreDeselect = ignoreSelect = false;
if (dragStarted && OS.GetCapture () != handle) OS.SetCapture (handle);
int hNewItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
/*
* Feature in Windows. When the old and new focused item
* are the same, Windows does not check to make sure that
* the item is actually selected, not just focused. The
* fix is to force the item to draw selected by setting
* the state mask. This is only necessary when the tree
* is single select.
*/
if ((style & SWT.SINGLE) != 0) {
if (hOldItem == hNewItem) {
tvItem.mask = OS.TVIF_STATE;
tvItem.state = OS.TVIS_SELECTED;
tvItem.stateMask = OS.TVIS_SELECTED;
tvItem.hItem = hNewItem;
OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
}
}
/* Reselect the last item that was unselected */
if ((style & SWT.MULTI) != 0) {
/* Check for CONTROL and reselect the last item */
if (hittestSelected || (wParam & OS.MK_CONTROL) != 0) {
if (hOldItem == hNewItem && hOldItem == lpht.hItem) {
if ((wParam & OS.MK_CONTROL) != 0) {
tvItem.state ^= OS.TVIS_SELECTED;
if (dragStarted) tvItem.state = OS.TVIS_SELECTED;
OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
}
} else {
if ((tvItem.state & OS.TVIS_SELECTED) != 0) {
tvItem.state = OS.TVIS_SELECTED;
OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
}
if ((wParam & OS.MK_CONTROL) != 0 && !dragStarted) {
if (hittestSelected) {
tvItem.state = 0;
tvItem.hItem = lpht.hItem;
OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
}
}
}
if (drawCount == 0) {
RECT rect1 = new RECT (), rect2 = new RECT ();
rect1.left = hOldItem; rect2.left = hNewItem;
int bits = OS.GetWindowLong (handle, OS.GWL_STYLE);
int fItemRect = (bits & OS.TVS_FULLROWSELECT) != 0 ? 0 : 1;
OS.SendMessage (handle, OS.TVM_GETITEMRECT, fItemRect, rect1);
OS.SendMessage (handle, OS.TVM_GETITEMRECT, fItemRect, rect2);
/*
* This code is intentionally commented.
*/
// OS.SendMessage (handle, OS.WM_SETREDRAW, 1, 0);
OS.DefWindowProc (handle, OS.WM_SETREDRAW, 1, 0);
if (OS.IsWinCE) {
OS.InvalidateRect (handle, rect1, false);
OS.InvalidateRect (handle, rect2, false);
OS.UpdateWindow (handle);
} else {
int flags = OS.RDW_UPDATENOW | OS.RDW_INVALIDATE;
OS.RedrawWindow (handle, rect1, 0, flags);
OS.RedrawWindow (handle, rect2, 0, flags);
}
}
}
/* Check for SHIFT or normal select and delect/reselect items */
if ((wParam & OS.MK_CONTROL) == 0) {
if (!hittestSelected || !dragStarted) {
tvItem.state = 0;
int oldProc = OS.GetWindowLong (handle, OS.GWL_WNDPROC);
OS.SetWindowLong (handle, OS.GWL_WNDPROC, TreeProc);
for (int i=0; i<items.length; i++) {
TreeItem item = items [i];
if (item != null && item.handle != hNewItem) {
tvItem.hItem = item.handle;
OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
}
}
tvItem.hItem = hNewItem;
tvItem.state = OS.TVIS_SELECTED;
OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
OS.SetWindowLong (handle, OS.GWL_WNDPROC, oldProc);
if ((wParam & OS.MK_SHIFT) != 0) {
RECT rect1 = new RECT ();
if (hAnchor == 0) hAnchor = hNewItem;
rect1.left = hAnchor;
if (OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect1) != 0) {
RECT rect2 = rect2 = new RECT ();
rect2.left = hNewItem;
OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect2);
int flags = rect1.top < rect2.top ? OS.TVGN_NEXTVISIBLE : OS.TVGN_PREVIOUSVISIBLE;
tvItem.state = OS.TVIS_SELECTED;
int hItem = tvItem.hItem = hAnchor;
OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
while (hItem != hNewItem) {
tvItem.hItem = hItem;
OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, flags, hItem);
}
}
}
}
}
}
if ((wParam & OS.MK_SHIFT) == 0) hAnchor = hNewItem;
/* Issue notification */
if (!gestureCompleted) {
tvItem.hItem = hNewItem;
tvItem.mask = OS.TVIF_PARAM;
OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
Event event = new Event ();
event.item = items [tvItem.lParam];
postEvent (SWT.Selection, event);
}
gestureCompleted = false;
/*
* Feature in Windows. Inside WM_LBUTTONDOWN and WM_RBUTTONDOWN,
* the widget starts a modal loop to determine if the user wants
* to begin a drag/drop operation or marque select. Unfortunately,
* this modal loop eats the corresponding mouse up. The fix is to
* detect the cases when the modal loop has eaten the mouse up and
* issue a fake mouse up.
*/
if (dragStarted) {
Event event = new Event ();
event.x = (short) (lParam & 0xFFFF);
event.y = (short) (lParam >> 16);
postEvent (SWT.DragDetect, event);
} else {
sendMouseEvent (SWT.MouseUp, 1, handle, OS.WM_LBUTTONUP, wParam, lParam);
}
dragStarted = false;
return new LRESULT (code);
}
LRESULT WM_MOVE (int wParam, int lParam) {
if (ignoreResize) return null;
return super.WM_MOVE (wParam, lParam);
}
LRESULT WM_NOTIFY (int wParam, int lParam) {
NMHDR hdr = new NMHDR ();
OS.MoveMemory (hdr, lParam, NMHDR.sizeof);
if (hwndHeader != 0 && hdr.hwndFrom == hwndHeader) {
/*
* Feature in Windows. On NT, the automatically created
* header control is created as a UNICODE window, not an
* ANSI window despite the fact that the parent is created
* as an ANSI window. This means that it sends UNICODE
* notification messages to the parent window on NT for
* no good reason. The data and size in the NMHEADER and
* HDITEM structs is identical between the platforms so no
* different message is actually necessary. Despite this,
* Windows sends different messages. The fix is to look
* for both messages, despite the platform. This works
* because only one will be sent on either platform, never
* both.
*/
switch (hdr.code) {
case OS.HDN_BEGINTRACKW:
case OS.HDN_BEGINTRACKA:
case OS.HDN_DIVIDERDBLCLICKW:
case OS.HDN_DIVIDERDBLCLICKA: {
NMHEADER phdn = new NMHEADER ();
OS.MoveMemory (phdn, lParam, NMHEADER.sizeof);
TreeColumn column = columns [phdn.iItem];
if (column != null && !column.getResizable ()) {
return LRESULT.ONE;
}
break;
}
case OS.HDN_ITEMCHANGINGW:
case OS.HDN_ITEMCHANGINGA: {
NMHEADER phdn = new NMHEADER ();
OS.MoveMemory (phdn, lParam, NMHEADER.sizeof);
if (phdn.pitem != 0) {
HDITEM newItem = new HDITEM ();
OS.MoveMemory (newItem, phdn.pitem, HDITEM.sizeof);
if ((newItem.mask & OS.HDI_WIDTH) != 0) {
HDITEM oldItem = new HDITEM ();
oldItem.mask = OS.HDI_WIDTH;
OS.SendMessage (hwndHeader, OS.HDM_GETITEM, phdn.iItem, oldItem);
int deltaX = newItem.cxy - oldItem.cxy;
RECT rect = new RECT (), itemRect = new RECT ();
OS.GetClientRect (handle, rect);
OS.SendMessage (hwndHeader, OS.HDM_GETITEMRECT, phdn.iItem, itemRect);
int gridWidth = getLinesVisible () ? GRID_WIDTH : 0;
rect.left = itemRect.right - gridWidth;
int count = OS.SendMessage (hwndHeader, OS.HDM_GETITEMCOUNT, 0, 0);
if (phdn.iItem < count - 1) {
for (int i=phdn.iItem; i<count; i++) {
OS.SendMessage (hwndHeader, OS.HDM_GETITEMRECT, i, itemRect);
}
rect.right = itemRect.right;
}
int flags = OS.SW_INVALIDATE | OS.SW_ERASE;
OS.ScrollWindowEx (handle, deltaX, 0, rect, null, 0, null, flags);
//TODO - column flashes when resized
if (phdn.iItem != 0) {
OS.SendMessage (hwndHeader, OS.HDM_GETITEMRECT, phdn.iItem, itemRect);
rect.left = itemRect.left;
rect.right = itemRect.right;
OS.InvalidateRect (handle, rect, true);
}
setScrollWidth ();
}
}
break;
}
case OS.HDN_ITEMCHANGEDW:
case OS.HDN_ITEMCHANGEDA: {
NMHEADER phdn = new NMHEADER ();
OS.MoveMemory (phdn, lParam, NMHEADER.sizeof);
if (phdn.pitem != 0) {
HDITEM pitem = new HDITEM ();
OS.MoveMemory (pitem, phdn.pitem, HDITEM.sizeof);
if ((pitem.mask & OS.HDI_WIDTH) != 0) {
TreeColumn column = columns [phdn.iItem];
if (column != null) {
column.sendEvent (SWT.Resize);
if (isDisposed ()) return LRESULT.ZERO;
int count = OS.SendMessage (hwndHeader, OS.HDM_GETITEMCOUNT, 0, 0);
TreeColumn [] newColumns = new TreeColumn [count];
System.arraycopy (columns, 0, newColumns, 0, count);
for (int i=phdn.iItem+1; i<count; i++) {
if (!newColumns [i].isDisposed ()) {
newColumns [i].sendEvent (SWT.Move);
}
}
}
}
setScrollWidth ();
}
break;
}
case OS.HDN_ITEMCLICKW:
case OS.HDN_ITEMCLICKA: {
NMHEADER phdn = new NMHEADER ();
OS.MoveMemory (phdn, lParam, NMHEADER.sizeof);
TreeColumn column = columns [phdn.iItem];
if (column != null) {
column.postEvent (SWT.Selection);
}
break;
}
case OS.HDN_ITEMDBLCLICKW:
case OS.HDN_ITEMDBLCLICKA: {
NMHEADER phdn = new NMHEADER ();
OS.MoveMemory (phdn, lParam, NMHEADER.sizeof);
TreeColumn column = columns [phdn.iItem];
if (column != null) {
column.postEvent (SWT.DefaultSelection);
}
break;
}
}
}
return super.WM_NOTIFY (wParam, lParam);
}
LRESULT WM_RBUTTONDOWN (int wParam, int lParam) {
/*
* Feature in Windows. The receiver uses WM_RBUTTONDOWN
* to initiate a drag/drop operation depending on how the
* user moves the mouse. If the user clicks the right button,
* without moving the mouse, the tree consumes the corresponding
* WM_RBUTTONUP. The fix is to avoid calling the window proc for
* the tree.
*/
sendMouseEvent (SWT.MouseDown, 3, handle, OS.WM_RBUTTONDOWN, wParam, lParam);
/*
* This code is intentionally commented.
*/
// if (OS.GetCapture () != handle) OS.SetCapture (handle);
setFocus ();
/*
* Feature in Windows. When the user selects a tree item
* with the right mouse button, the item remains selected
* only as long as the user does not release or move the
* mouse. As soon as this happens, the selection snaps
* back to the previous selection. This behavior can be
* observed in the Explorer but is not instantly apparent
* because the Explorer explicity sets the selection when
* the user chooses a menu item. If the user cancels the
* menu, the selection snaps back. The fix is to avoid
* calling the window proc and do the selection ourselves.
* This behavior is consistent with the table.
*/
TVHITTESTINFO lpht = new TVHITTESTINFO ();
lpht.x = (short) (lParam & 0xFFFF);
lpht.y = (short) (lParam >> 16);
OS.SendMessage (handle, OS.TVM_HITTEST, 0, lpht);
if (lpht.hItem != 0 && (lpht.flags & (OS.TVHT_ONITEMICON | OS.TVHT_ONITEMLABEL)) != 0) {
if ((wParam & (OS.MK_CONTROL | OS.MK_SHIFT)) == 0) {
TVITEM tvItem = new TVITEM ();
tvItem.mask = OS.TVIF_STATE;
tvItem.stateMask = OS.TVIS_SELECTED;
tvItem.hItem = lpht.hItem;
OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
if ((tvItem.state & OS.TVIS_SELECTED) == 0) {
ignoreSelect = true;
OS.SendMessage (handle, OS.TVM_SELECTITEM, OS.TVGN_CARET, 0);
ignoreSelect = false;
OS.SendMessage (handle, OS.TVM_SELECTITEM, OS.TVGN_CARET, lpht.hItem);
}
}
}
return LRESULT.ZERO;
}
LRESULT WM_PRINTCLIENT (int wParam, int lParam) {
LRESULT result = super.WM_PRINTCLIENT (wParam, lParam);
if (result != null) return result;
/*
* Feature in Windows. For some reason, when WM_PRINT is used
* to capture an image of a hierarchy that contains a tree with
* columns, the clipping that is used to stop the first column
* from drawing on top of subsequent columns stops the first
* column and the tree lines from drawing. This does not happen
* during WM_PAINT. The fix is to draw without clipping and
* then draw the rest of the columns on top. Since the drawing
* is happening in WM_PRINTCLIENT, the redrawing is not visible.
*/
printClient = true;
int code = callWindowProc (handle, OS.WM_PRINTCLIENT, wParam, lParam);
printClient = false;
return new LRESULT (code);
}
LRESULT WM_SETFOCUS (int wParam, int lParam) {
LRESULT result = super.WM_SETFOCUS (wParam, lParam);
if ((style & SWT.SINGLE) != 0) return result;
/*
* Feature in Windows. When multiple item have
* the TVIS_SELECTED state, Windows redraws only
* the focused item in the color used to show the
* selection when the tree loses or gains focus.
* The fix is to force Windows to redraw all the
* visible items when focus is gained or lost.
*/
OS.InvalidateRect (handle, null, false);
return result;
}
LRESULT WM_SETFONT (int wParam, int lParam) {
LRESULT result = super.WM_SETFONT (wParam, lParam);
if (result != null) return result;
if (hwndHeader != 0) OS.SendMessage (hwndHeader, OS.WM_SETFONT, wParam, lParam);
return result;
}
LRESULT WM_SIZE (int wParam, int lParam) {
if (ignoreResize) return null;
return super.WM_SIZE (wParam, lParam);
}
LRESULT WM_SYSCOLORCHANGE (int wParam, int lParam) {
LRESULT result = super.WM_SYSCOLORCHANGE (wParam, lParam);
if (result != null) return result;
if ((style & SWT.CHECK) != 0) setCheckboxImageList ();
return result;
}
LRESULT wmColorChild (int wParam, int lParam) {
/*
* Feature in Windows. Tree controls send WM_CTLCOLOREDIT
* to allow application code to change the default colors.
* This is undocumented and conflicts with TVM_SETTEXTCOLOR
* and TVM_SETBKCOLOR, the documented way to do this. The
* fix is to ignore WM_CTLCOLOREDIT messages from trees.
*/
return null;
}
LRESULT wmNotifyChild (int wParam, int lParam) {
NMHDR hdr = new NMHDR ();
OS.MoveMemory (hdr, lParam, NMHDR.sizeof);
switch (hdr.code) {
case OS.TVN_GETDISPINFOA:
case OS.TVN_GETDISPINFOW: {
NMTVDISPINFO lptvdi = new NMTVDISPINFO ();
OS.MoveMemory (lptvdi, lParam, NMTVDISPINFO.sizeof);
/*
* Feature in Windows. When a new tree item is inserted
* using TVM_INSERTITEM, a TVN_GETDISPINFO is sent before
* TVM_INSERTITEM returns and before the item is added to
* the items array. The fix is to check for null.
*
* NOTE: This only happens on XP with the version 6.00 of
* COMCTL32.DLL,
*/
if (items == null) break;
TreeItem item = items [lptvdi.lParam];
if (item == null) break;
if ((lptvdi.mask & OS.TVIF_TEXT) != 0) {
String string = item.text;
TCHAR buffer = new TCHAR (getCodePage (), string, false);
int byteCount = Math.min (buffer.length (), lptvdi.cchTextMax - 1) * TCHAR.sizeof;
OS.MoveMemory (lptvdi.pszText, buffer, byteCount);
OS.MoveMemory (lptvdi.pszText + byteCount, new byte [TCHAR.sizeof], TCHAR.sizeof);
lptvdi.cchTextMax = Math.min (lptvdi.cchTextMax, string.length () + 1);
}
if ((lptvdi.mask & (OS.TVIF_IMAGE | OS.TVIF_SELECTEDIMAGE)) != 0) {
Image image = item.image;
lptvdi.iImage = lptvdi.iSelectedImage = OS.I_IMAGENONE;
if (image != null) {
lptvdi.iImage = lptvdi.iSelectedImage = imageIndex (image);
}
}
OS.MoveMemory (lParam, lptvdi, NMTVDISPINFO.sizeof);
break;
}
case OS.NM_CUSTOMDRAW: {
if (!customDraw) break;
NMTVCUSTOMDRAW nmcd = new NMTVCUSTOMDRAW ();
OS.MoveMemory (nmcd, lParam, NMTVCUSTOMDRAW.sizeof);
switch (nmcd.dwDrawStage) {
case OS.CDDS_PREPAINT: {
return new LRESULT (OS.CDRF_NOTIFYITEMDRAW | OS.CDRF_NOTIFYPOSTPAINT);
}
case OS.CDDS_POSTPAINT: {
if (linesVisible) {
int hDC = nmcd.hdc;
if (hwndHeader != 0) {
int x = 0;
RECT rect = new RECT ();
HDITEM hdItem = new HDITEM ();
hdItem.mask = OS.HDI_WIDTH;
int count = OS.SendMessage (hwndHeader, OS.HDM_GETITEMCOUNT, 0, 0);
for (int i=0; i<count; i++) {
OS.SendMessage (hwndHeader, OS.HDM_GETITEM, i, hdItem);
OS.SetRect (rect, x, nmcd.top, x + hdItem.cxy, nmcd.bottom);
OS.DrawEdge (hDC, rect, OS.BDR_SUNKENINNER, OS.BF_RIGHT);
x += hdItem.cxy;
}
}
RECT rect = new RECT ();
int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_LASTVISIBLE, 0);
rect.left = hItem;
if (OS.SendMessage (handle, OS.TVM_GETITEMRECT, 0, rect) != 0) {
int height = rect.bottom - rect.top;
while (rect.bottom < nmcd.bottom) {
int top = rect.top + height;
OS.SetRect (rect, rect.left, top, rect.right, top + height);
OS.DrawEdge (hDC, rect, OS.BDR_SUNKENINNER, OS.BF_BOTTOM);
}
}
}
return new LRESULT (OS.CDRF_DODEFAULT);
}
case OS.CDDS_ITEMPREPAINT: {
/*
* Feature in Windows. When a new tree item is inserted
* using TVM_INSERTITEM and the tree is using custom draw,
* a NM_CUSTOMDRAW is sent before TVM_INSERTITEM returns
* and before the item is added to the items array. The
* fix is to check for null.
*
* NOTE: This only happens on XP with the version 6.00 of
* COMCTL32.DLL,
*/
TreeItem item = items [nmcd.lItemlParam];
if (item == null) break;
if (nmcd.left >= nmcd.right || nmcd.top >= nmcd.bottom) {
break;
}
int hDC = nmcd.hdc;
OS.SaveDC (hDC);
if (linesVisible) {
RECT rect = new RECT ();
OS.SetRect (rect, nmcd.left, nmcd.top, nmcd.right, nmcd.bottom);
OS.DrawEdge (hDC, rect, OS.BDR_SUNKENINNER, OS.BF_BOTTOM);
}
if (!printClient && (style & SWT.FULL_SELECTION) == 0) {
if (hwndHeader != 0) {
int count = OS.SendMessage (hwndHeader, OS.HDM_GETITEMCOUNT, 0, 0);
if (count != 0) {
HDITEM hdItem = new HDITEM ();
hdItem.mask = OS.HDI_WIDTH;
OS.SendMessage (hwndHeader, OS.HDM_GETITEM, 0, hdItem);
int hRgn = OS.CreateRectRgn (nmcd.left, nmcd.top, nmcd.left + hdItem.cxy, nmcd.bottom);
OS.SelectClipRgn (hDC, hRgn);
OS.DeleteObject (hRgn);
}
}
}
if (item.font == -1 && item.foreground == -1 && item.background == -1) {
if (item.cellForeground == null && item.cellBackground == null && item.cellFont == null) {
return new LRESULT (OS.CDRF_DODEFAULT | OS.CDRF_NOTIFYPOSTPAINT);
}
}
int hFont = item.cellFont != null ? item.cellFont [0] : item.font;
if (hFont != -1) OS.SelectObject (hDC, hFont);
if (OS.IsWindowEnabled (handle)) {
TVITEM tvItem = new TVITEM ();
tvItem.mask = OS.TVIF_STATE;
tvItem.hItem = item.handle;
OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
if ((tvItem.state & (OS.TVIS_SELECTED | OS.TVIS_DROPHILITED)) == 0) {
int clrText = item.cellForeground != null ? item.cellForeground [0] : item.foreground;
nmcd.clrText = clrText == -1 ? getForegroundPixel () : clrText;
int clrTextBk = item.cellBackground != null ? item.cellBackground [0] : item.background;
nmcd.clrTextBk = clrTextBk == -1 ? getBackgroundPixel () : clrTextBk;
OS.MoveMemory (lParam, nmcd, NMTVCUSTOMDRAW.sizeof);
}
}
return new LRESULT (OS.CDRF_NEWFONT | OS.CDRF_NOTIFYPOSTPAINT);
}
case OS.CDDS_ITEMPOSTPAINT: {
TreeItem item = items [nmcd.lItemlParam];
if (item == null) break;
/*
* Feature in Windows. Under certain circumstances, Windows
* sends CDDS_ITEMPOSTPAINT for an empty rectangle. This is
* not a problem providing that graphics do not occur outside
* the rectangle. The fix is to test for the rectangle and
* draw nothing.
*
* NOTE: This seems to happen when both I_IMAGECALLBACK
* and LPSTR_TEXTCALLBACK are used at the same time with
* TVM_SETITEM.
*/
if (nmcd.left >= nmcd.right || nmcd.top >= nmcd.bottom) {
break;
}
int hDC = nmcd.hdc;
OS.RestoreDC (hDC, -1);
OS.SetBkMode (hDC, OS.TRANSPARENT);
boolean useColor = OS.IsWindowEnabled (handle);
if (useColor) {
if ((style & SWT.FULL_SELECTION) != 0) {
TVITEM tvItem = new TVITEM ();
tvItem.mask = OS.TVIF_STATE;
tvItem.hItem = item.handle;
OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
if ((tvItem.state & OS.TVIS_SELECTED) != 0) {
useColor = false;
} else {
/*
* Feature in Windows. When the mouse is pressed and the
* selection is first drawn for a tree, the item is drawn
* selected, but the TVIS_SELECTED bits for the item are
* not set. When the user moves the mouse slightly and
* a drag and drop operation is not started, the item is
* drawn again and this time TVIS_SELECTED is set. This
* means that an item that is in a tree that has the style
* TVS_FULLROWSELECT and that also contains colored cells
* will not draw the entire row selected until the user
* moves the mouse. The fix is to test for the selection
* colors and guess that the item is selected.
*
* NOTE: This code doesn't work when the foreground and
* background of the tree are set to the selection colors
* but this does not happen in a regular application.
*/
int clrForeground = OS.GetTextColor (hDC);
if (clrForeground == OS.GetSysColor (OS.COLOR_HIGHLIGHTTEXT)) {
int clrBackground = OS.GetBkColor (hDC);
if (clrBackground == OS.GetSysColor (OS.COLOR_HIGHLIGHT)) {
useColor = false;
}
}
}
} else {
OS.SetTextColor (hDC, getForegroundPixel ());
}
}
if (hwndHeader != 0) {
GCData data = new GCData();
data.device = display;
GC gc = GC.win32_new (hDC, data);
int x = 0, gridWidth = linesVisible ? GRID_WIDTH : 0;
Point size = null;
RECT rect = new RECT ();
HDITEM hdItem = new HDITEM ();
hdItem.mask = OS.HDI_WIDTH;
int count = OS.SendMessage (hwndHeader, OS.HDM_GETITEMCOUNT, 0, 0);
for (int i=0; i<count; i++) {
OS.SendMessage (hwndHeader, OS.HDM_GETITEM, i, hdItem);
if (i > 0) {
OS.SetRect (rect, x, nmcd.top, x + hdItem.cxy, nmcd.bottom - gridWidth);
if (printClient || (style & SWT.FULL_SELECTION) != 0) {
drawBackground (hDC, OS.GetBkColor (hDC), rect);
}
if (useColor) {
int clrTextBk = item.cellBackground != null ? item.cellBackground [i] : item.background;
if (clrTextBk != -1) drawBackground (hDC, clrTextBk, rect);
}
Image image = item.images != null ? item.images [i] : null;
if (image != null) {
Rectangle bounds = image.getBounds ();
if (size == null) size = getImageSize ();
gc.drawImage (image, 0, 0, bounds.width, bounds.height, rect.left, rect.top, size.x, size.y);
OS.SetRect (rect, rect.left + size.x + INSET, rect.top, rect.right - INSET, rect.bottom);
} else {
OS.SetRect (rect, rect.left + INSET, rect.top, rect.right - INSET, rect.bottom);
}
/*
* Bug in Windows. When DrawText() is used with DT_VCENTER
* and DT_ENDELLIPSIS, the ellipsis can draw outside of the
* rectangle when the rectangle is empty. The fix is avoid
* all text drawing for empty rectangles.
*/
if (rect.left < rect.right) {
if (item.strings != null && item.strings [i] != null) {
int hFont = item.cellFont != null ? item.cellFont [i] : item.font;
hFont = hFont != -1 ? OS.SelectObject (hDC, hFont) : -1;
int clrText = -1;
if (useColor) {
clrText = item.cellForeground != null ? item.cellForeground [i] : item.foreground;
clrText = clrText != -1? OS.SetTextColor (hDC, clrText) : -1;
}
int flags = OS.DT_NOPREFIX | OS.DT_SINGLELINE | OS.DT_VCENTER | OS.DT_ENDELLIPSIS;
TreeColumn column = columns [i];
if ((column.style & SWT.LEFT) != 0) flags |= OS.DT_LEFT;
if ((column.style & SWT.CENTER) != 0) flags |= OS.DT_CENTER;
if ((column.style & SWT.RIGHT) != 0) flags |= OS.DT_RIGHT;
TCHAR buffer = new TCHAR (getCodePage (), item.strings [i], false);
OS.DrawText (hDC, buffer, buffer.length (), rect, flags);
if (hFont != -1) OS.SelectObject (hDC, hFont);
if (clrText != -1) OS.SetTextColor (hDC, clrText);
}
}
}
x += hdItem.cxy;
}
if (count > 0) {
if (printClient || (style & SWT.FULL_SELECTION) != 0) {
OS.SetRect (rect, x, nmcd.top, nmcd.right, nmcd.bottom - gridWidth);
drawBackground (hDC, OS.GetBkColor (hDC), rect);
}
}
gc.dispose ();
}
if (linesVisible) {
if (printClient && (style & SWT.FULL_SELECTION) == 0) {
if (hwndHeader != 0) {
int count = OS.SendMessage (hwndHeader, OS.HDM_GETITEMCOUNT, 0, 0);
if (count != 0 && printClient) {
HDITEM hdItem = new HDITEM ();
hdItem.mask = OS.HDI_WIDTH;
OS.SendMessage (hwndHeader, OS.HDM_GETITEM, 0, hdItem);
RECT rect = new RECT ();
OS.SetRect (rect, nmcd.left + hdItem.cxy, nmcd.top, nmcd.right, nmcd.bottom);
OS.DrawEdge (hDC, rect, OS.BDR_SUNKENINNER, OS.BF_BOTTOM);
}
}
}
RECT rect = new RECT ();
if (OS.COMCTL32_MAJOR < 6 || (style & SWT.FULL_SELECTION) != 0) {
OS.SetRect (rect, nmcd.left, nmcd.top, nmcd.right, nmcd.bottom);
} else {
rect.left = item.handle;
if (OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect) != 0) {
int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
if (hItem == item.handle) {
OS.SetRect (rect, rect.right, nmcd.top, nmcd.right, nmcd.bottom);
} else {
TVITEM tvItem = new TVITEM ();
tvItem.mask = OS.TVIF_STATE;
tvItem.hItem = item.handle;
OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
if ((tvItem.state & OS.TVIS_SELECTED) != 0) {
OS.SetRect (rect, rect.right, nmcd.top, nmcd.right, nmcd.bottom);
} else {
OS.SetRect (rect, rect.left, nmcd.top, nmcd.right, nmcd.bottom);
}
}
} else {
rect.left = 0;
}
}
OS.DrawEdge (hDC, rect, OS.BDR_SUNKENINNER, OS.BF_BOTTOM);
}
return new LRESULT (OS.CDRF_DODEFAULT);
}
}
break;
}
case OS.NM_DBLCLK: {
if (hooks (SWT.DefaultSelection)) return LRESULT.ONE;
break;
}
case OS.TVN_SELCHANGEDA:
case OS.TVN_SELCHANGEDW: {
if ((style & SWT.MULTI) != 0) {
if (lockSelection) {
/* Restore the old selection state of both items */
if (oldSelected) {
TVITEM tvItem = new TVITEM ();
int offset = NMHDR.sizeof + 4;
OS.MoveMemory (tvItem, lParam + offset, TVITEM.sizeof);
tvItem.mask = OS.TVIF_STATE;
tvItem.stateMask = OS.TVIS_SELECTED;
tvItem.state = OS.TVIS_SELECTED;
OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
}
if (!newSelected && ignoreSelect) {
TVITEM tvItem = new TVITEM ();
int offset = NMHDR.sizeof + 4 + TVITEM.sizeof;
OS.MoveMemory (tvItem, lParam + offset, TVITEM.sizeof);
tvItem.mask = OS.TVIF_STATE;
tvItem.stateMask = OS.TVIS_SELECTED;
tvItem.state = 0;
OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
}
}
}
if (!ignoreSelect) {
TVITEM tvItem = new TVITEM ();
int offset = NMHDR.sizeof + 4 + TVITEM.sizeof;
OS.MoveMemory (tvItem, lParam + offset, TVITEM.sizeof);
hAnchor = tvItem.hItem;
Event event = new Event ();
event.item = items [tvItem.lParam];
postEvent (SWT.Selection, event);
}
updateScrollBar ();
break;
}
case OS.TVN_SELCHANGINGA:
case OS.TVN_SELCHANGINGW: {
if ((style & SWT.MULTI) != 0) {
if (lockSelection) {
/* Save the old selection state for both items */
TVITEM tvItem = new TVITEM ();
int offset1 = NMHDR.sizeof + 4;
OS.MoveMemory (tvItem, lParam + offset1, TVITEM.sizeof);
oldSelected = (tvItem.state & OS.TVIS_SELECTED) != 0;
int offset2 = NMHDR.sizeof + 4 + TVITEM.sizeof;
OS.MoveMemory (tvItem, lParam + offset2, TVITEM.sizeof);
newSelected = (tvItem.state & OS.TVIS_SELECTED) != 0;
}
}
if (!ignoreSelect && !ignoreDeselect) {
hAnchor = 0;
if ((style & SWT.MULTI) != 0) deselectAll ();
}
break;
}
case OS.TVN_ITEMEXPANDEDA:
case OS.TVN_ITEMEXPANDEDW: {
updateScrollBar ();
break;
}
case OS.TVN_ITEMEXPANDINGA:
case OS.TVN_ITEMEXPANDINGW: {
if (!ignoreExpand) {
TVITEM tvItem = new TVITEM ();
int offset = NMHDR.sizeof + 4 + TVITEM.sizeof;
OS.MoveMemory (tvItem, lParam + offset, TVITEM.sizeof);
/*
* Feature in Windows. In some cases, TVM_ITEMEXPANDING
* is sent from within TVM_DELETEITEM for the tree item
* being destroyed. By the time the message is sent,
* the item has already been removed from the list of
* items. The fix is to check for null.
*/
if (items == null) break;
TreeItem item = items [tvItem.lParam];
if (item == null) break;
Event event = new Event ();
event.item = item;
int [] action = new int [1];
OS.MoveMemory (action, lParam + NMHDR.sizeof, 4);
switch (action [0]) {
case OS.TVE_EXPAND:
/*
* Bug in Windows. When the numeric keypad asterisk
* key is used to expand every item in the tree, Windows
* sends TVN_ITEMEXPANDING to items in the tree that
* have already been expanded. The fix is to detect
* that the item is already expanded and ignore the
* notification.
*/
if ((tvItem.state & OS.TVIS_EXPANDED) == 0) {
sendEvent (SWT.Expand, event);
if (isDisposed ()) return LRESULT.ZERO;
}
break;
case OS.TVE_COLLAPSE:
sendEvent (SWT.Collapse, event);
if (isDisposed ()) return LRESULT.ZERO;
break;
}
}
break;
}
case OS.TVN_BEGINDRAGA:
case OS.TVN_BEGINDRAGW:
case OS.TVN_BEGINRDRAGA:
case OS.TVN_BEGINRDRAGW: {
TVITEM tvItem = new TVITEM ();
int offset = NMHDR.sizeof + 4 + TVITEM.sizeof;
OS.MoveMemory (tvItem, lParam + offset, TVITEM.sizeof);
if (tvItem.hItem != 0 && (tvItem.state & OS.TVIS_SELECTED) == 0) {
ignoreSelect = ignoreDeselect = true;
OS.SendMessage (handle, OS.TVM_SELECTITEM, OS.TVGN_CARET, tvItem.hItem);
ignoreSelect = ignoreDeselect = false;
}
dragStarted = true;
break;
}
case OS.NM_RECOGNIZEGESTURE: {
/*
* Feature in Pocket PC. The tree and table controls detect the tap
* and hold gesture by default. They send a GN_CONTEXTMENU message to show
* the popup menu. This default behaviour is unwanted on Pocket PC 2002
* when no menu has been set, as it still draws a red circle. The fix
* is to disable this default behaviour when no menu is set by returning
* TRUE when receiving the Pocket PC 2002 specific NM_RECOGNIZEGESTURE
* message.
*/
if (OS.IsPPC) {
boolean hasMenu = menu != null && !menu.isDisposed ();
if (!hasMenu && !hooks (SWT.MenuDetect)) return LRESULT.ONE;
}
break;
}
case OS.GN_CONTEXTMENU: {
if (OS.IsPPC) {
boolean hasMenu = menu != null && !menu.isDisposed ();
if (hasMenu || hooks (SWT.MenuDetect)) {
NMRGINFO nmrg = new NMRGINFO ();
OS.MoveMemory (nmrg, lParam, NMRGINFO.sizeof);
showMenu (nmrg.x, nmrg.y);
gestureCompleted = true;
return LRESULT.ONE;
}
}
break;
}
}
return super.wmNotifyChild (wParam, lParam);
}
}