Mercurial > projects > dwt-linux
view dwtexamples/controlexample/TreeTab.d @ 144:424cc4e14124
some notes with todos and author notice
author | Frank Benoit <benoit@tionex.de> |
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date | Wed, 23 Jan 2008 01:08:24 +0100 |
parents | 9a61fc56eb56 |
children |
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/******************************************************************************* * Copyright (c) 2000, 2007 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 * Port to the D programming language: * Frank Benoit <benoit@tionex.de> *******************************************************************************/ module dwtexamples.controlexample.TreeTab; import dwt.DWT; import dwt.events.DisposeEvent; import dwt.events.DisposeListener; import dwt.events.SelectionAdapter; import dwt.events.SelectionEvent; import dwt.events.SelectionListener; import dwt.graphics.Color; import dwt.graphics.Font; import dwt.graphics.FontData; import dwt.graphics.Image; import dwt.graphics.Point; import dwt.graphics.RGB; import dwt.layout.GridData; import dwt.layout.GridLayout; import dwt.widgets.Button; import dwt.widgets.Event; import dwt.widgets.Group; import dwt.widgets.Item; import dwt.widgets.Menu; import dwt.widgets.MenuItem; import dwt.widgets.TableItem; import dwt.widgets.Tree; import dwt.widgets.TreeColumn; import dwt.widgets.TreeItem; import dwt.widgets.Widget; import dwtexamples.controlexample.Tab; import dwtexamples.controlexample.ControlExample; import dwtexamples.controlexample.ScrollableTab; import tango.text.convert.Format; import tango.util.Convert; import tango.core.Exception; class TreeTab : ScrollableTab { /* Example widgets and groups that contain them */ Tree tree1, tree2; TreeItem textNode1, imageNode1; Group treeGroup, imageTreeGroup, itemGroup; /* Size widgets added to the "Size" group */ Button packColumnsButton; /* Style widgets added to the "Style" group */ Button checkButton, fullSelectionButton; /* Other widgets added to the "Other" group */ Button multipleColumns, moveableColumns, resizableColumns, headerVisibleButton, sortIndicatorButton, headerImagesButton, subImagesButton, linesVisibleButton; /* Controls and resources added to the "Colors and Fonts" group */ static const int ITEM_FOREGROUND_COLOR = 3; static const int ITEM_BACKGROUND_COLOR = 4; static const int ITEM_FONT = 5; static const int CELL_FOREGROUND_COLOR = 6; static const int CELL_BACKGROUND_COLOR = 7; static const int CELL_FONT = 8; Color itemForegroundColor, itemBackgroundColor, cellForegroundColor, cellBackgroundColor; Font itemFont, cellFont; static char[] [] columnTitles; static char[][][] tableData; Point menuMouseCoords; /** * Creates the Tab within a given instance of ControlExample. */ this(ControlExample instance) { super(instance); if( columnTitles.length is 0 ){ columnTitles = [ ControlExample.getResourceString("TableTitle_0"), ControlExample.getResourceString("TableTitle_1"), ControlExample.getResourceString("TableTitle_2"), ControlExample.getResourceString("TableTitle_3")]; } if( tableData.length is 0 ){ tableData = [ [ ControlExample.getResourceString("TableLine0_0"), ControlExample.getResourceString("TableLine0_1"), ControlExample.getResourceString("TableLine0_2"), ControlExample.getResourceString("TableLine0_3") ], [ ControlExample.getResourceString("TableLine1_0"), ControlExample.getResourceString("TableLine1_1"), ControlExample.getResourceString("TableLine1_2"), ControlExample.getResourceString("TableLine1_3") ], [ ControlExample.getResourceString("TableLine2_0"), ControlExample.getResourceString("TableLine2_1"), ControlExample.getResourceString("TableLine2_2"), ControlExample.getResourceString("TableLine2_3") ] ]; } } /** * Creates the "Colors and Fonts" group. */ void createColorAndFontGroup () { super.createColorAndFontGroup(); TableItem item = new TableItem(colorAndFontTable, DWT.None); item.setText(ControlExample.getResourceString ("Item_Foreground_Color")); item = new TableItem(colorAndFontTable, DWT.None); item.setText(ControlExample.getResourceString ("Item_Background_Color")); item = new TableItem(colorAndFontTable, DWT.None); item.setText(ControlExample.getResourceString ("Item_Font")); item = new TableItem(colorAndFontTable, DWT.None); item.setText(ControlExample.getResourceString ("Cell_Foreground_Color")); item = new TableItem(colorAndFontTable, DWT.None); item.setText(ControlExample.getResourceString ("Cell_Background_Color")); item = new TableItem(colorAndFontTable, DWT.None); item.setText(ControlExample.getResourceString ("Cell_Font")); shell.addDisposeListener(new class() DisposeListener { public void widgetDisposed(DisposeEvent event) { if (itemBackgroundColor !is null) itemBackgroundColor.dispose(); if (itemForegroundColor !is null) itemForegroundColor.dispose(); if (itemFont !is null) itemFont.dispose(); if (cellBackgroundColor !is null) cellBackgroundColor.dispose(); if (cellForegroundColor !is null) cellForegroundColor.dispose(); if (cellFont !is null) cellFont.dispose(); itemBackgroundColor = null; itemForegroundColor = null; itemFont = null; cellBackgroundColor = null; cellForegroundColor = null; cellFont = null; } }); } void changeFontOrColor(int index) { switch (index) { case ITEM_FOREGROUND_COLOR: { Color oldColor = itemForegroundColor; if (oldColor is null) oldColor = textNode1.getForeground (); colorDialog.setRGB(oldColor.getRGB()); RGB rgb = colorDialog.open(); if (rgb is null) return; oldColor = itemForegroundColor; itemForegroundColor = new Color (display, rgb); setItemForeground (); if (oldColor !is null) oldColor.dispose (); } break; case ITEM_BACKGROUND_COLOR: { Color oldColor = itemBackgroundColor; if (oldColor is null) oldColor = textNode1.getBackground (); colorDialog.setRGB(oldColor.getRGB()); RGB rgb = colorDialog.open(); if (rgb is null) return; oldColor = itemBackgroundColor; itemBackgroundColor = new Color (display, rgb); setItemBackground (); if (oldColor !is null) oldColor.dispose (); } break; case ITEM_FONT: { Font oldFont = itemFont; if (oldFont is null) oldFont = textNode1.getFont (); fontDialog.setFontList(oldFont.getFontData()); FontData fontData = fontDialog.open (); if (fontData is null) return; oldFont = itemFont; itemFont = new Font (display, fontData); setItemFont (); setExampleWidgetSize (); if (oldFont !is null) oldFont.dispose (); } break; case CELL_FOREGROUND_COLOR: { Color oldColor = cellForegroundColor; if (oldColor is null) oldColor = textNode1.getForeground (1); colorDialog.setRGB(oldColor.getRGB()); RGB rgb = colorDialog.open(); if (rgb is null) return; oldColor = cellForegroundColor; cellForegroundColor = new Color (display, rgb); setCellForeground (); if (oldColor !is null) oldColor.dispose (); } break; case CELL_BACKGROUND_COLOR: { Color oldColor = cellBackgroundColor; if (oldColor is null) oldColor = textNode1.getBackground (1); colorDialog.setRGB(oldColor.getRGB()); RGB rgb = colorDialog.open(); if (rgb is null) return; oldColor = cellBackgroundColor; cellBackgroundColor = new Color (display, rgb); setCellBackground (); if (oldColor !is null) oldColor.dispose (); } break; case CELL_FONT: { Font oldFont = cellFont; if (oldFont is null) oldFont = textNode1.getFont (1); fontDialog.setFontList(oldFont.getFontData()); FontData fontData = fontDialog.open (); if (fontData is null) return; oldFont = cellFont; cellFont = new Font (display, fontData); setCellFont (); setExampleWidgetSize (); if (oldFont !is null) oldFont.dispose (); } break; default: super.changeFontOrColor(index); } } /** * Creates the "Other" group. */ void createOtherGroup () { super.createOtherGroup (); /* Create display controls specific to this example */ linesVisibleButton = new Button (otherGroup, DWT.CHECK); linesVisibleButton.setText (ControlExample.getResourceString("Lines_Visible")); multipleColumns = new Button (otherGroup, DWT.CHECK); multipleColumns.setText (ControlExample.getResourceString("Multiple_Columns")); headerVisibleButton = new Button (otherGroup, DWT.CHECK); headerVisibleButton.setText (ControlExample.getResourceString("Header_Visible")); sortIndicatorButton = new Button (otherGroup, DWT.CHECK); sortIndicatorButton.setText (ControlExample.getResourceString("Sort_Indicator")); moveableColumns = new Button (otherGroup, DWT.CHECK); moveableColumns.setText (ControlExample.getResourceString("Moveable_Columns")); resizableColumns = new Button (otherGroup, DWT.CHECK); resizableColumns.setText (ControlExample.getResourceString("Resizable_Columns")); headerImagesButton = new Button (otherGroup, DWT.CHECK); headerImagesButton.setText (ControlExample.getResourceString("Header_Images")); subImagesButton = new Button (otherGroup, DWT.CHECK); subImagesButton.setText (ControlExample.getResourceString("Sub_Images")); /* Add the listeners */ linesVisibleButton.addSelectionListener (new class() SelectionAdapter { public void widgetSelected (SelectionEvent event) { setWidgetLinesVisible (); } }); multipleColumns.addSelectionListener (new class() SelectionAdapter { public void widgetSelected (SelectionEvent event) { recreateExampleWidgets (); } }); headerVisibleButton.addSelectionListener (new class() SelectionAdapter { public void widgetSelected (SelectionEvent event) { setWidgetHeaderVisible (); } }); sortIndicatorButton.addSelectionListener (new class() SelectionAdapter { public void widgetSelected (SelectionEvent event) { setWidgetSortIndicator (); } }); moveableColumns.addSelectionListener (new class() SelectionAdapter { public void widgetSelected (SelectionEvent event) { setColumnsMoveable (); } }); resizableColumns.addSelectionListener (new class() SelectionAdapter { public void widgetSelected (SelectionEvent event) { setColumnsResizable (); } }); headerImagesButton.addSelectionListener (new class() SelectionAdapter { public void widgetSelected (SelectionEvent event) { recreateExampleWidgets (); } }); subImagesButton.addSelectionListener (new class() SelectionAdapter { public void widgetSelected (SelectionEvent event) { recreateExampleWidgets (); } }); } /** * Creates the "Example" group. */ void createExampleGroup () { super.createExampleGroup (); /* Create a group for the text tree */ treeGroup = new Group (exampleGroup, DWT.NONE); treeGroup.setLayout (new GridLayout ()); treeGroup.setLayoutData (new GridData (DWT.FILL, DWT.FILL, true, true)); treeGroup.setText ("Tree"); /* Create a group for the image tree */ imageTreeGroup = new Group (exampleGroup, DWT.NONE); imageTreeGroup.setLayout (new GridLayout ()); imageTreeGroup.setLayoutData (new GridData (DWT.FILL, DWT.FILL, true, true)); imageTreeGroup.setText (ControlExample.getResourceString("Tree_With_Images")); } /** * Creates the "Example" widgets. */ void createExampleWidgets () { /* Compute the widget style */ int style = getDefaultStyle(); if (singleButton.getSelection()) style |= DWT.SINGLE; if (multiButton.getSelection()) style |= DWT.MULTI; if (horizontalButton.getSelection ()) style |= DWT.H_SCROLL; if (verticalButton.getSelection ()) style |= DWT.V_SCROLL; if (checkButton.getSelection()) style |= DWT.CHECK; if (fullSelectionButton.getSelection ()) style |= DWT.FULL_SELECTION; if (borderButton.getSelection()) style |= DWT.BORDER; /* Create the text tree */ tree1 = new Tree (treeGroup, style); bool multiColumn = multipleColumns.getSelection(); if (multiColumn) { for (int i = 0; i < columnTitles.length; i++) { TreeColumn treeColumn = new TreeColumn(tree1, DWT.NONE); treeColumn.setText(columnTitles[i]); treeColumn.setToolTipText(Format( ControlExample.getResourceString("Tooltip") , columnTitles[i])); } tree1.setSortColumn(tree1.getColumn(0)); } for (int i = 0; i < 4; i++) { TreeItem item = new TreeItem (tree1, DWT.NONE); setItemText(item, i, ControlExample.getResourceString("Node_" ~ to!(char[])(i + 1))); if (i < 3) { TreeItem subitem = new TreeItem (item, DWT.NONE); setItemText(subitem, i, ControlExample.getResourceString("Node_" ~ to!(char[])(i + 1) ~ "_1")); } } TreeItem treeRoots[] = tree1.getItems (); TreeItem item = new TreeItem (treeRoots[1], DWT.NONE); setItemText(item, 1, ControlExample.getResourceString("Node_2_2")); item = new TreeItem (item, DWT.NONE); setItemText(item, 1, ControlExample.getResourceString("Node_2_2_1")); textNode1 = treeRoots[0]; packColumns(tree1); try { TreeColumn column = tree1.getColumn(0); resizableColumns.setSelection (column.getResizable()); } catch (IllegalArgumentException ex) {} /* Create the image tree */ tree2 = new Tree (imageTreeGroup, style); Image image = instance.images[ControlExample.ciClosedFolder]; if (multiColumn) { for (int i = 0; i < columnTitles.length; i++) { TreeColumn treeColumn = new TreeColumn(tree2, DWT.NONE); treeColumn.setText(columnTitles[i]); treeColumn.setToolTipText(Format( ControlExample.getResourceString("Tooltip"), columnTitles[i])); if (headerImagesButton.getSelection()) treeColumn.setImage(image); } } for (int i = 0; i < 4; i++) { item = new TreeItem (tree2, DWT.NONE); setItemText(item, i, ControlExample.getResourceString("Node_" ~ to!(char[])(i + 1))); if (multiColumn && subImagesButton.getSelection()) { for (int j = 0; j < columnTitles.length; j++) { item.setImage(j, image); } } else { item.setImage(image); } if (i < 3) { TreeItem subitem = new TreeItem (item, DWT.NONE); setItemText(subitem, i, ControlExample.getResourceString("Node_" ~ to!(char[])(i + 1) ~ "_1")); if (multiColumn && subImagesButton.getSelection()) { for (int j = 0; j < columnTitles.length; j++) { subitem.setImage(j, image); } } else { subitem.setImage(image); } } } treeRoots = tree2.getItems (); item = new TreeItem (treeRoots[1], DWT.NONE); setItemText(item, 1, ControlExample.getResourceString("Node_2_2")); if (multiColumn && subImagesButton.getSelection()) { for (int j = 0; j < columnTitles.length; j++) { item.setImage(j, image); } } else { item.setImage(image); } item = new TreeItem (item, DWT.NONE); setItemText(item, 1, ControlExample.getResourceString("Node_2_2_1")); if (multiColumn && subImagesButton.getSelection()) { for (int j = 0; j < columnTitles.length; j++) { item.setImage(j, image); } } else { item.setImage(image); } imageNode1 = treeRoots[0]; packColumns(tree2); } void setItemText(TreeItem item, int i, char[] node) { int index = i % 3; if (multipleColumns.getSelection()) { tableData [index][0] = node; item.setText (tableData [index]); } else { item.setText (node); } } /** * Creates the "Size" group. The "Size" group contains * controls that allow the user to change the size of * the example widgets. */ void createSizeGroup () { super.createSizeGroup(); packColumnsButton = new Button (sizeGroup, DWT.PUSH); packColumnsButton.setText (ControlExample.getResourceString("Pack_Columns")); packColumnsButton.addSelectionListener(new class() SelectionAdapter { public void widgetSelected (SelectionEvent event) { packColumns (tree1); packColumns (tree2); setExampleWidgetSize (); } }); } /** * Creates the "Style" group. */ void createStyleGroup() { super.createStyleGroup(); /* Create the extra widgets */ checkButton = new Button (styleGroup, DWT.CHECK); checkButton.setText ("DWT.CHECK"); fullSelectionButton = new Button (styleGroup, DWT.CHECK); fullSelectionButton.setText ("DWT.FULL_SELECTION"); } /** * Gets the "Example" widget children's items, if any. * * @return an array containing the example widget children's items */ Item [] getExampleWidgetItems () { /* Note: We do not bother collecting the tree items * because tree items don't have any events. If events * are ever added to TreeItem, then this needs to change. */ Item [] columns1 = tree1.getColumns(); Item [] columns2 = tree2.getColumns(); Item [] allItems = new Item [columns1.length + columns2.length]; System.arraycopy(columns1, 0, allItems, 0, columns1.length); System.arraycopy(columns2, 0, allItems, columns1.length, columns2.length); return allItems; } /** * Gets the "Example" widget children. */ Widget [] getExampleWidgets () { return [ cast(Widget) tree1, tree2 ]; } /** * Returns a list of set/get API method names (without the set/get prefix) * that can be used to set/get values in the example control(s). */ char[][] getMethodNames() { return ["ColumnOrder", "Selection", "ToolTipText", "TopItem"]; } //PORTING_LEFT /+ Object[] parameterForType(char[] typeName, char[] value, Widget widget) { if (typeName.equals("org.eclipse.swt.widgets.TreeItem")) { TreeItem item = findItem(value, ((Tree) widget).getItems()); if (item !is null) return new Object[] {item}; } if (typeName.equals("[Lorg.eclipse.swt.widgets.TreeItem;")) { char[][] values = split(value, ','); TreeItem[] items = new TreeItem[values.length]; for (int i = 0; i < values.length; i++) { TreeItem item = findItem(values[i], ((Tree) widget).getItems()); if (item is null) break; items[i] = item; } return new Object[] {items}; } return super.parameterForType(typeName, value, widget); } +/ TreeItem findItem(char[] value, TreeItem[] items) { for (int i = 0; i < items.length; i++) { TreeItem item = items[i]; if (item.getText() == value ) return item; item = findItem(value, item.getItems()); if (item !is null) return item; } return null; } /** * Gets the text for the tab folder item. */ char[] getTabText () { return "Tree"; } void packColumns (Tree tree) { if (multipleColumns.getSelection()) { int columnCount = tree.getColumnCount(); for (int i = 0; i < columnCount; i++) { TreeColumn treeColumn = tree.getColumn(i); treeColumn.pack(); } } } /** * Sets the moveable columns state of the "Example" widgets. */ void setColumnsMoveable () { bool selection = moveableColumns.getSelection(); TreeColumn[] columns1 = tree1.getColumns(); for (int i = 0; i < columns1.length; i++) { columns1[i].setMoveable(selection); } TreeColumn[] columns2 = tree2.getColumns(); for (int i = 0; i < columns2.length; i++) { columns2[i].setMoveable(selection); } } /** * Sets the resizable columns state of the "Example" widgets. */ void setColumnsResizable () { bool selection = resizableColumns.getSelection(); TreeColumn[] columns1 = tree1.getColumns(); for (int i = 0; i < columns1.length; i++) { columns1[i].setResizable(selection); } TreeColumn[] columns2 = tree2.getColumns(); for (int i = 0; i < columns2.length; i++) { columns2[i].setResizable(selection); } } /** * Sets the foreground color, background color, and font * of the "Example" widgets to their default settings. * Also sets foreground and background color of the Node 1 * TreeItems to default settings. */ void resetColorsAndFonts () { super.resetColorsAndFonts (); Color oldColor = itemForegroundColor; itemForegroundColor = null; setItemForeground (); if (oldColor !is null) oldColor.dispose(); oldColor = itemBackgroundColor; itemBackgroundColor = null; setItemBackground (); if (oldColor !is null) oldColor.dispose(); Font oldFont = font; itemFont = null; setItemFont (); if (oldFont !is null) oldFont.dispose(); oldColor = cellForegroundColor; cellForegroundColor = null; setCellForeground (); if (oldColor !is null) oldColor.dispose(); oldColor = cellBackgroundColor; cellBackgroundColor = null; setCellBackground (); if (oldColor !is null) oldColor.dispose(); oldFont = font; cellFont = null; setCellFont (); if (oldFont !is null) oldFont.dispose(); } /** * Sets the state of the "Example" widgets. */ void setExampleWidgetState () { setItemBackground (); setItemForeground (); setItemFont (); setCellBackground (); setCellForeground (); setCellFont (); if (!instance.startup) { setColumnsMoveable (); setColumnsResizable (); setWidgetHeaderVisible (); setWidgetSortIndicator (); setWidgetLinesVisible (); } super.setExampleWidgetState (); checkButton.setSelection ((tree1.getStyle () & DWT.CHECK) !is 0); checkButton.setSelection ((tree2.getStyle () & DWT.CHECK) !is 0); fullSelectionButton.setSelection ((tree1.getStyle () & DWT.FULL_SELECTION) !is 0); fullSelectionButton.setSelection ((tree2.getStyle () & DWT.FULL_SELECTION) !is 0); try { TreeColumn column = tree1.getColumn(0); moveableColumns.setSelection (column.getMoveable()); resizableColumns.setSelection (column.getResizable()); } catch (IllegalArgumentException ex) {} headerVisibleButton.setSelection (tree1.getHeaderVisible()); linesVisibleButton.setSelection (tree1.getLinesVisible()); } /** * Sets the background color of the Node 1 TreeItems in column 1. */ void setCellBackground () { if (!instance.startup) { textNode1.setBackground (1, cellBackgroundColor); imageNode1.setBackground (1, cellBackgroundColor); } /* Set the background color item's image to match the background color of the cell. */ Color color = cellBackgroundColor; if (color is null) color = textNode1.getBackground (1); TableItem item = colorAndFontTable.getItem(CELL_BACKGROUND_COLOR); Image oldImage = item.getImage(); if (oldImage !is null) oldImage.dispose(); item.setImage (colorImage(color)); } /** * Sets the foreground color of the Node 1 TreeItems in column 1. */ void setCellForeground () { if (!instance.startup) { textNode1.setForeground (1, cellForegroundColor); imageNode1.setForeground (1, cellForegroundColor); } /* Set the foreground color item's image to match the foreground color of the cell. */ Color color = cellForegroundColor; if (color is null) color = textNode1.getForeground (1); TableItem item = colorAndFontTable.getItem(CELL_FOREGROUND_COLOR); Image oldImage = item.getImage(); if (oldImage !is null) oldImage.dispose(); item.setImage (colorImage(color)); } /** * Sets the font of the Node 1 TreeItems in column 1. */ void setCellFont () { if (!instance.startup) { textNode1.setFont (1, cellFont); imageNode1.setFont (1, cellFont); } /* Set the font item's image to match the font of the item. */ Font ft = cellFont; if (ft is null) ft = textNode1.getFont (1); TableItem item = colorAndFontTable.getItem(CELL_FONT); Image oldImage = item.getImage(); if (oldImage !is null) oldImage.dispose(); item.setImage (fontImage(ft)); item.setFont(ft); colorAndFontTable.layout (); } /** * Sets the background color of the Node 1 TreeItems. */ void setItemBackground () { if (!instance.startup) { textNode1.setBackground (itemBackgroundColor); imageNode1.setBackground (itemBackgroundColor); } /* Set the background button's color to match the background color of the item. */ Color color = itemBackgroundColor; if (color is null) color = textNode1.getBackground (); TableItem item = colorAndFontTable.getItem(ITEM_BACKGROUND_COLOR); Image oldImage = item.getImage(); if (oldImage !is null) oldImage.dispose(); item.setImage (colorImage(color)); } /** * Sets the foreground color of the Node 1 TreeItems. */ void setItemForeground () { if (!instance.startup) { textNode1.setForeground (itemForegroundColor); imageNode1.setForeground (itemForegroundColor); } /* Set the foreground button's color to match the foreground color of the item. */ Color color = itemForegroundColor; if (color is null) color = textNode1.getForeground (); TableItem item = colorAndFontTable.getItem(ITEM_FOREGROUND_COLOR); Image oldImage = item.getImage(); if (oldImage !is null) oldImage.dispose(); item.setImage (colorImage(color)); } /** * Sets the font of the Node 1 TreeItems. */ void setItemFont () { if (!instance.startup) { textNode1.setFont (itemFont); imageNode1.setFont (itemFont); } /* Set the font item's image to match the font of the item. */ Font ft = itemFont; if (ft is null) ft = textNode1.getFont (); TableItem item = colorAndFontTable.getItem(ITEM_FONT); Image oldImage = item.getImage(); if (oldImage !is null) oldImage.dispose(); item.setImage (fontImage(ft)); item.setFont(ft); colorAndFontTable.layout (); } /** * Sets the header visible state of the "Example" widgets. */ void setWidgetHeaderVisible () { tree1.setHeaderVisible (headerVisibleButton.getSelection ()); tree2.setHeaderVisible (headerVisibleButton.getSelection ()); } /** * Sets the sort indicator state of the "Example" widgets. */ void setWidgetSortIndicator () { if (sortIndicatorButton.getSelection ()) { initializeSortState (tree1); initializeSortState (tree2); } else { resetSortState (tree1); resetSortState (tree2); } } /** * Sets the initial sort indicator state and adds a listener * to cycle through sort states and columns. */ void initializeSortState (Tree tree) { /* Reset to known state: 'down' on column 0. */ tree.setSortDirection (DWT.DOWN); TreeColumn [] columns = tree.getColumns(); for (int i = 0; i < columns.length; i++) { TreeColumn column = columns[i]; if (i is 0) tree.setSortColumn(column); SelectionListener listener = new class(tree) SelectionAdapter { Tree t; this( Tree t ){ this.t = t; } public void widgetSelected(SelectionEvent e) { int sortDirection = DWT.DOWN; if (e.widget is t.getSortColumn()) { /* If the sort column hasn't changed, cycle down -> up -> none. */ switch (t.getSortDirection ()) { case DWT.DOWN: sortDirection = DWT.UP; break; case DWT.UP: sortDirection = DWT.NONE; break; } } else { t.setSortColumn(cast(TreeColumn)e.widget); } t.setSortDirection (sortDirection); } }; column.addSelectionListener(listener); column.setData("SortListener", cast(Object)listener); //$NON-NLS-1$ } } void resetSortState (Tree tree) { tree.setSortDirection (DWT.NONE); TreeColumn [] columns = tree.getColumns(); for (int i = 0; i < columns.length; i++) { SelectionListener listener = cast(SelectionListener)columns[i].getData("SortListener"); //$NON-NLS-1$ if (listener !is null) columns[i].removeSelectionListener(listener); } } /** * Sets the lines visible state of the "Example" widgets. */ void setWidgetLinesVisible () { tree1.setLinesVisible (linesVisibleButton.getSelection ()); tree2.setLinesVisible (linesVisibleButton.getSelection ()); } protected void specialPopupMenuItems(Menu menu, Event event) { MenuItem item = new MenuItem(menu, DWT.PUSH); item.setText("getItem(Point) on mouse coordinates"); Tree t = cast(Tree) event.widget; menuMouseCoords = t.toControl(new Point(event.x, event.y)); item.addSelectionListener(new class(t) SelectionAdapter { Tree t; this( Tree t ){ this.t = t; } public void widgetSelected(SelectionEvent e) { eventConsole.append ("getItem(Point(" ~ menuMouseCoords.toString ~ ")) returned: " ~ (this.t.getItem(menuMouseCoords)).toString); eventConsole.append ("\n"); }; }); } }