| package org.eclipse.ui.internal; |
| |
| /******************************************************************************* |
| * Copyright (c) 2000, 2003 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials! |
| * are made available under the terms of the Common Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/cpl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| * Randy Hudson <hudsonr@us.ibm.com> |
| * - Fix for bug 19524 - Resizing WorkbenchWindow resizes Views |
| * Cagatay Kavukcuoglu <cagatayk@acm.org> |
| * - Fix for bug 10025 - Resizing views should not use height ratios |
| **********************************************************************/ |
| |
| import java.util.ArrayList; |
| |
| import org.eclipse.swt.graphics.Point; |
| import org.eclipse.swt.graphics.Rectangle; |
| import org.eclipse.swt.widgets.Composite; |
| /** |
| * Implementation of a tree where the node is allways a sash |
| * and it allways has two chidren. If a children is removed |
| * the sash, ie the node, is removed as well and its other children |
| * placed on its parent. |
| */ |
| public class LayoutTree { |
| /* The parent of this tree or null if it is the root */ |
| LayoutTreeNode parent; |
| /* Any LayoutPart if this is a leaf or a LayoutSashPart if it is a node */ |
| LayoutPart part; |
| |
| /** |
| * Initialize this tree with its part. |
| */ |
| public LayoutTree(LayoutPart part) { |
| this.part = part; |
| } |
| /** |
| * Add the relation ship between the children in the list |
| * and returns the left children. |
| */ |
| public LayoutPart computeRelation(ArrayList relations) { |
| return part; |
| } |
| |
| /** |
| * Locates the part that intersects the given point |
| * |
| * @param toFind |
| * @return |
| */ |
| public LayoutPart findPart(Point toFind) { |
| return part; |
| } |
| |
| public boolean fixedHeight() { |
| return !part.resizesVertically(); |
| } |
| |
| /** |
| * Dispose all Sashs in this tree |
| */ |
| public void disposeSashes() { |
| } |
| /** |
| * Find a LayoutPart in the tree and return its sub-tree. Returns |
| * null if the child is not found. |
| */ |
| public LayoutTree find(LayoutPart child) { |
| if(part != child) |
| return null; |
| return this; |
| } |
| /** |
| * Find the Left,Right,Top and Botton |
| * sashes around this tree and set them |
| * in <code>sashes</code> |
| */ |
| public void findSashes(PartPane.Sashes sashes) { |
| if(getParent() == null) |
| return; |
| getParent().findSashes(this,sashes); |
| } |
| /** |
| * Find the part that is in the bottom rigth possition. |
| */ |
| public LayoutPart findBottomRight() { |
| return part; |
| } |
| /** |
| * Find a sash in the tree and return its sub-tree. Returns |
| * null if the sash is not found. |
| */ |
| public LayoutTreeNode findSash(LayoutPartSash sash) { |
| return null; |
| } |
| /** |
| * Return the bounds of this tree which is the rectangle that |
| * contains all Controls in this tree. |
| */ |
| public Rectangle getBounds() { |
| return part.getBounds(); |
| } |
| |
| // getMinimumWidth() added by cagatayk@acm.org |
| public int getMinimumWidth() { |
| return part.getMinimumWidth(); |
| } |
| |
| // getMinimumHeight() added by cagatayk@acm.org |
| public int getMinimumHeight() { |
| return part.getMinimumHeight(); |
| } |
| /** |
| * Returns the parent of this tree or null if it is the root. |
| */ |
| public LayoutTreeNode getParent() { |
| return parent; |
| } |
| /** |
| * Inserts a new child on the tree. The child will be placed beside |
| * the <code>relative</code> child. Returns the new root of the tree. |
| */ |
| public LayoutTree insert(LayoutPart child,boolean left,LayoutPartSash sash,LayoutPart relative) { |
| LayoutTree relativeChild = find(relative); |
| LayoutTreeNode node = new LayoutTreeNode(sash); |
| if(relativeChild == null) { |
| //Did not find the relative part. Insert beside the root. |
| node.setChild(left,child); |
| node.setChild(!left,this); |
| return node; |
| } else { |
| LayoutTreeNode oldParent = relativeChild.getParent(); |
| node.setChild(left,child); |
| node.setChild(!left,relativeChild); |
| if(oldParent == null) { |
| //It was the root. Return a new root. |
| return node; |
| } |
| oldParent.replaceChild(relativeChild,node); |
| return this; |
| } |
| } |
| /** |
| * Returns true if this tree can be compressed and expanded. |
| * @return true if springy |
| */ |
| public boolean isCompressible() { |
| //Added for bug 19524 |
| return part.isCompressible(); |
| } |
| /** |
| * Returns true if this tree has visible parts otherwise returns false. |
| */ |
| public boolean isVisible() { |
| return !(part instanceof PartPlaceholder); |
| } |
| /** |
| * Recompute the ratios in this tree. |
| */ |
| public void recomputeRatio() { |
| } |
| /** |
| * Find a child in the tree and remove it and its parent. |
| * The other child of its parent is placed on the parent's parent. |
| * Returns the new root of the tree. |
| */ |
| public LayoutTree remove(LayoutPart child) { |
| LayoutTree tree = find(child); |
| if(tree == null) |
| return this; |
| LayoutTreeNode oldParent = tree.getParent(); |
| if(oldParent == null) { |
| //It was the root and the only child of this tree |
| return null; |
| } |
| if(oldParent.getParent() == null) |
| return oldParent.remove(tree); |
| |
| oldParent.remove(tree); |
| return this; |
| } |
| /** |
| * Resize the parts on this tree to fit in <code>bounds</code>. |
| */ |
| public void setBounds(Rectangle bounds) { |
| part.setBounds(bounds); |
| } |
| /** |
| * Set the parent of this tree. |
| */ |
| void setParent(LayoutTreeNode parent) { |
| this.parent = parent; |
| } |
| /** |
| * Set the part of this leaf |
| */ |
| void setPart(LayoutPart part) { |
| this.part = part; |
| } |
| /** |
| * Returns a string representation of this object. |
| */ |
| public String toString() { |
| return "(" + part.toString() + ")";//$NON-NLS-2$//$NON-NLS-1$ |
| } |
| /** |
| * Create the sashes if the children are visible |
| * and dispose it if they are not. |
| */ |
| public void updateSashes(Composite parent) { |
| } |
| |
| /** |
| * Writes a description of the layout to the given string buffer. |
| * This is used for drag-drop test suites to determine if two layouts are the |
| * same. Like a hash code, the description should compare as equal iff the |
| * layouts are the same. However, it should be user-readable in order to |
| * help debug failed tests. Although these are english readable strings, |
| * they should not be translated or equality tests will fail. |
| * <p> |
| * This is only intended for use by test suites. |
| * </p> |
| * |
| * @param buf |
| */ |
| public void describeLayout(StringBuffer buf) { |
| part.describeLayout(buf); |
| } |
| |
| |
| } |