| /******************************************************************************* |
| * 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 |
| *******************************************************************************/ |
| package org.eclipse.search.internal.ui.util; |
| |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.StringTokenizer; |
| |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.events.SelectionAdapter; |
| import org.eclipse.swt.events.SelectionEvent; |
| import org.eclipse.swt.events.SelectionListener; |
| import org.eclipse.swt.layout.GridData; |
| import org.eclipse.swt.layout.GridLayout; |
| import org.eclipse.swt.widgets.Button; |
| import org.eclipse.swt.widgets.Composite; |
| import org.eclipse.swt.widgets.Control; |
| import org.eclipse.swt.widgets.Label; |
| import org.eclipse.swt.widgets.Shell; |
| import org.eclipse.swt.widgets.Text; |
| |
| import org.eclipse.jface.dialogs.IDialogConstants; |
| import org.eclipse.jface.viewers.CheckboxTableViewer; |
| |
| import org.eclipse.ui.IFileEditorMapping; |
| import org.eclipse.ui.PlatformUI; |
| import org.eclipse.ui.dialogs.FileEditorMappingContentProvider; |
| import org.eclipse.ui.dialogs.FileEditorMappingLabelProvider; |
| import org.eclipse.ui.dialogs.SelectionDialog; |
| import org.eclipse.ui.help.WorkbenchHelp; |
| |
| import org.eclipse.search.internal.ui.ISearchHelpContextIds; |
| import org.eclipse.search.internal.ui.SearchMessages; |
| |
| /** |
| * The TypeFilteringDialog is a SelectionDialog that allows the user to select a file editor. |
| * XXX: Workbench should offer this dialog (public API), see: bug 2763: TypeFilteringDialog should be public API |
| */ |
| public class TypeFilteringDialog extends SelectionDialog { |
| |
| private Collection fInitialSelections; |
| |
| // the visual selection widget group |
| private CheckboxTableViewer fListViewer; |
| |
| // sizing constants |
| private final static int SIZING_SELECTION_WIDGET_HEIGHT= 250; |
| private final static int SIZING_SELECTION_WIDGET_WIDTH= 300; |
| |
| private Text fUserDefinedText; |
| |
| private IFileEditorMapping[] fCurrentInput; |
| /** |
| * Creates a type selection dialog using the supplied entries. Set the initial selections to those |
| * whose extensions match the preselections. |
| */ |
| public TypeFilteringDialog(Shell parentShell, Collection preselections) { |
| super(parentShell); |
| setTitle(SearchMessages.getString("TypesFiltering.title")); //$NON-NLS-1$ |
| fInitialSelections= preselections; |
| setMessage(SearchMessages.getString("TypesFiltering.message")); //$NON-NLS-1$ |
| } |
| |
| /** |
| * Add the selection and deselection buttons to the dialog. |
| * @param composite org.eclipse.swt.widgets.Composite |
| */ |
| private void addSelectionButtons(Composite composite) { |
| |
| Composite buttonComposite= new Composite(composite, SWT.RIGHT); |
| GridLayout layout= new GridLayout(); |
| layout.numColumns= 2; |
| buttonComposite.setLayout(layout); |
| GridData data = |
| new GridData(GridData.HORIZONTAL_ALIGN_END | GridData.GRAB_HORIZONTAL); |
| data.grabExcessHorizontalSpace= true; |
| composite.setData(data); |
| |
| Button selectButton = |
| createButton( |
| buttonComposite, |
| IDialogConstants.SELECT_ALL_ID, |
| SearchMessages.getString("TypesFiltering.selectAll"), //$NON-NLS-1$ |
| false); |
| |
| SelectionListener listener= new SelectionAdapter() { |
| public void widgetSelected(SelectionEvent e) { |
| getListViewer().setAllChecked(true); |
| } |
| }; |
| selectButton.addSelectionListener(listener); |
| |
| Button deselectButton = |
| createButton( |
| buttonComposite, |
| IDialogConstants.DESELECT_ALL_ID, |
| SearchMessages.getString("TypesFiltering.deselectAll"), //$NON-NLS-1$ |
| false); |
| |
| listener= new SelectionAdapter() { |
| public void widgetSelected(SelectionEvent e) { |
| getListViewer().setAllChecked(false); |
| |
| } |
| }; |
| deselectButton.addSelectionListener(listener); |
| |
| } |
| |
| /** |
| * Add the currently-specified extensions. |
| */ |
| private void addUserDefinedEntries(List result) { |
| |
| StringTokenizer tokenizer = |
| new StringTokenizer(fUserDefinedText.getText(), FileTypeEditor.TYPE_DELIMITER); |
| |
| //Allow the *. and . prefix and strip out the extension |
| while (tokenizer.hasMoreTokens()) { |
| String currentExtension= tokenizer.nextToken().trim(); |
| if (!currentExtension.equals("")) //$NON-NLS-1$ |
| result.add(currentExtension); |
| } |
| } |
| |
| /** |
| * Visually checks the previously-specified elements in this dialog's list |
| * viewer. |
| */ |
| private void checkInitialSelections() { |
| |
| IFileEditorMapping editorMappings[] = |
| PlatformUI.getWorkbench().getEditorRegistry().getFileEditorMappings(); |
| ArrayList selectedMappings= new ArrayList(); |
| |
| for (int i= 0; i < editorMappings.length; i++) { |
| IFileEditorMapping mapping= editorMappings[i]; |
| if (fInitialSelections.contains(mapping.getLabel())) { |
| fListViewer.setChecked(mapping, true); |
| selectedMappings.add(mapping.getLabel()); |
| } |
| } |
| |
| //Now add in the ones not selected to the user defined list |
| Iterator initialIterator= fInitialSelections.iterator(); |
| StringBuffer entries= new StringBuffer(); |
| boolean first= true; |
| while (initialIterator.hasNext()) { |
| String nextExtension= (String)initialIterator.next(); |
| if (!selectedMappings.contains(nextExtension)) { |
| if (!first) { |
| entries.append(FileTypeEditor.TYPE_DELIMITER); |
| entries.append(" "); //$NON-NLS-1$ |
| } |
| first= false; |
| entries.append(nextExtension); |
| } |
| } |
| fUserDefinedText.setText(entries.toString()); |
| } |
| |
| /* (non-Javadoc) |
| * Method declared in Window. |
| */ |
| protected void configureShell(Shell shell) { |
| super.configureShell(shell); |
| WorkbenchHelp.setHelp(shell, ISearchHelpContextIds.TYPE_FILTERING_DIALOG); |
| } |
| |
| /* (non-Javadoc) |
| * Method declared on Dialog. |
| */ |
| protected Control createDialogArea(Composite parent) { |
| // page group |
| Composite composite= (Composite)super.createDialogArea(parent); |
| |
| createMessageArea(composite); |
| |
| fListViewer= CheckboxTableViewer.newCheckList(composite, SWT.BORDER); |
| GridData data= new GridData(GridData.FILL_BOTH); |
| data.heightHint= SIZING_SELECTION_WIDGET_HEIGHT; |
| data.widthHint= SIZING_SELECTION_WIDGET_WIDTH; |
| fListViewer.getTable().setLayoutData(data); |
| |
| fListViewer.setLabelProvider(FileEditorMappingLabelProvider.INSTANCE); |
| fListViewer.setContentProvider(FileEditorMappingContentProvider.INSTANCE); |
| |
| addSelectionButtons(composite); |
| |
| createUserEntryGroup(composite); |
| |
| initializeViewer(); |
| |
| // initialize page |
| if (fInitialSelections != null && !fInitialSelections.isEmpty()) |
| checkInitialSelections(); |
| |
| applyDialogFont(composite); |
| return composite; |
| } |
| |
| /** |
| * Create the group that shows the user defined entries for the dialog. |
| * @param parent the parent this is being created in. |
| */ |
| private void createUserEntryGroup(Composite parent) { |
| |
| // destination specification group |
| Composite userDefinedGroup= new Composite(parent, SWT.NONE); |
| GridLayout layout= new GridLayout(); |
| layout.numColumns= 2; |
| userDefinedGroup.setLayout(layout); |
| userDefinedGroup.setLayoutData( |
| new GridData(GridData.HORIZONTAL_ALIGN_FILL | GridData.VERTICAL_ALIGN_FILL)); |
| |
| new Label(userDefinedGroup, SWT.NONE).setText( |
| SearchMessages.getString("TypesFiltering.otherExtensions")); //$NON-NLS-1$ |
| |
| // user defined entry field |
| fUserDefinedText= new Text(userDefinedGroup, SWT.SINGLE | SWT.BORDER); |
| GridData data = |
| new GridData(GridData.HORIZONTAL_ALIGN_FILL | GridData.GRAB_HORIZONTAL); |
| fUserDefinedText.setLayoutData(data); |
| } |
| |
| /** |
| * Return the input to the dialog. |
| */ |
| private IFileEditorMapping[] getInput() { |
| |
| //Filter the mappings to be just those with a wildcard extension |
| if (fCurrentInput == null) { |
| List wildcardEditors= new ArrayList(); |
| IFileEditorMapping[] allMappings = |
| PlatformUI.getWorkbench().getEditorRegistry().getFileEditorMappings(); |
| for (int i= 0; i < allMappings.length; i++) { |
| if (allMappings[i].getName().equals("*")) //$NON-NLS-1$ |
| wildcardEditors.add(allMappings[i]); |
| } |
| fCurrentInput= new IFileEditorMapping[wildcardEditors.size()]; |
| wildcardEditors.toArray(fCurrentInput); |
| } |
| |
| return fCurrentInput; |
| } |
| |
| /** |
| * Initializes this dialog's viewer after it has been laid out. |
| */ |
| private void initializeViewer() { |
| fListViewer.setInput(getInput()); |
| } |
| |
| /** |
| * The <code>ListSelectionDialog</code> implementation of this |
| * <code>Dialog</code> method builds a list of the selected elements for later |
| * retrieval by the client and closes this dialog. |
| */ |
| protected void okPressed() { |
| |
| // Get the input children. |
| IFileEditorMapping[] children= getInput(); |
| |
| List list= new ArrayList(); |
| |
| // Build a list of selected children. |
| for (int i= 0; i < children.length; ++i) { |
| IFileEditorMapping element= children[i]; |
| if (fListViewer.getChecked(element)) |
| list.add(element.getLabel()); |
| } |
| |
| addUserDefinedEntries(list); |
| setResult(list); |
| super.okPressed(); |
| } |
| |
| protected CheckboxTableViewer getListViewer() { |
| return fListViewer; |
| } |
| } |