Mercurial > projects > dwt-win
view dwt/custom/TableTreeEditor.d @ 194:3afcd4ddcf90
Update to SWT 3.3.2
author | Frank Benoit <benoit@tionex.de> |
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date | Wed, 19 Mar 2008 21:48:31 +0100 |
parents | a5afe31f5cdd |
children | 349b8c12e243 |
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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 dwt.custom.TableTreeEditor; import dwt.DWT; import dwt.events.ControlEvent; import dwt.events.ControlListener; import dwt.events.TreeEvent; import dwt.events.TreeListener; import dwt.graphics.Rectangle; import dwt.widgets.Control; import dwt.widgets.Table; import dwt.widgets.TableColumn; import dwt.custom.ControlEditor; import dwt.custom.TableTree; import dwt.custom.TableTreeItem; import dwt.dwthelper.Runnable; import dwt.dwthelper.utils; /** * * A TableTreeEditor is a manager for a Control that appears above a cell in a TableTree * and tracks with the moving and resizing of that cell. It can be used to display a * text widget above a cell in a TableTree so that the user can edit the contents of * that cell. It can also be used to display a button that can launch a dialog for * modifying the contents of the associated cell. * * <p> Here is an example of using a TableTreeEditor: * <code><pre> * final TableTree tableTree = new TableTree(shell, DWT.FULL_SELECTION | DWT.HIDE_SELECTION); * final Table table = tableTree.getTable(); * TableColumn column1 = new TableColumn(table, DWT.NONE); * TableColumn column2 = new TableColumn(table, DWT.NONE); * for (int i = 0; i < 10; i++) { * TableTreeItem item = new TableTreeItem(tableTree, DWT.NONE); * item.setText(0, "item " + i); * item.setText(1, "edit this value"); * for (int j = 0; j < 3; j++) { * TableTreeItem subitem = new TableTreeItem(item, DWT.NONE); * subitem.setText(0, "subitem " + i + " " + j); * subitem.setText(1, "edit this value"); * } * } * column1.setWidth(100); * column2.pack(); * * final TableTreeEditor editor = new TableTreeEditor(tableTree); * //The editor must have the same size as the cell and must * //not be any smaller than 50 pixels. * editor.horizontalAlignment = DWT.LEFT; * editor.grabHorizontal = true; * editor.minimumWidth = 50; * // editing the second column * final int EDITABLECOLUMN = 1; * * tableTree.addSelectionListener(new SelectionAdapter() { * public void widgetSelected(SelectionEvent e) { * // Clean up any previous editor control * Control oldEditor = editor.getEditor(); * if (oldEditor !is null) oldEditor.dispose(); * * // Identify the selected row * TableTreeItem item = (TableTreeItem)e.item; * if (item is null) return; * * // The control that will be the editor must be a child of the Table * Text newEditor = new Text(table, DWT.NONE); * newEditor.setText(item.getText(EDITABLECOLUMN)); * newEditor.addModifyListener(new ModifyListener() { * public void modifyText(ModifyEvent e) { * Text text = (Text)editor.getEditor(); * editor.getItem().setText(EDITABLECOLUMN, text.getText()); * } * }); * newEditor.selectAll(); * newEditor.setFocus(); * editor.setEditor(newEditor, item, EDITABLECOLUMN); * } * }); * </pre></code> * * @deprecated As of 3.1 use TreeEditor with Tree, TreeItem and TreeColumn */ public class TableTreeEditor : ControlEditor { alias ControlEditor.setEditor setEditor; TableTree tableTree; TableTreeItem item; int column = -1; ControlListener columnListener; TreeListener treeListener; /** * Creates a TableTreeEditor for the specified TableTree. * * @param tableTree the TableTree Control above which this editor will be displayed * */ public this (TableTree tableTree) { super(tableTree.getTable()); this.tableTree = tableTree; treeListener = new class() TreeListener { Runnable runnable; this() { runnable = new class() Runnable { public void run() { if (editor is null || editor.isDisposed()) return; if (this.outer.outer.tableTree.isDisposed()) return; layout(); editor.setVisible(true); } }; } public void treeCollapsed(TreeEvent e) { if (editor is null || editor.isDisposed ()) return; editor.setVisible(false); e.display.asyncExec(runnable); } public void treeExpanded(TreeEvent e) { if (editor is null || editor.isDisposed ()) return; editor.setVisible(false); e.display.asyncExec(runnable); } }; tableTree.addTreeListener(treeListener); columnListener = new class() ControlListener { public void controlMoved(ControlEvent e){ layout (); } public void controlResized(ControlEvent e){ layout (); } }; // To be consistent with older versions of DWT, grabVertical defaults to true grabVertical = true; } override Rectangle computeBounds () { if (item is null || column is -1 || item.isDisposed() || item.tableItem is null) return new Rectangle(0, 0, 0, 0); Rectangle cell = item.getBounds(column); Rectangle area = tableTree.getClientArea(); if (cell.x < area.x + area.width) { if (cell.x + cell.width > area.x + area.width) { cell.width = area.x + area.width - cell.x; } } Rectangle editorRect = new Rectangle(cell.x, cell.y, minimumWidth, minimumHeight); if (grabHorizontal) { editorRect.width = Math.max(cell.width, minimumWidth); } if (grabVertical) { editorRect.height = Math.max(cell.height, minimumHeight); } if (horizontalAlignment is DWT.RIGHT) { editorRect.x += cell.width - editorRect.width; } else if (horizontalAlignment is DWT.LEFT) { // do nothing - cell.x is the right answer } else { // default is CENTER editorRect.x += (cell.width - editorRect.width)/2; } if (verticalAlignment is DWT.BOTTOM) { editorRect.y += cell.height - editorRect.height; } else if (verticalAlignment is DWT.TOP) { // do nothing - cell.y is the right answer } else { // default is CENTER editorRect.y += (cell.height - editorRect.height)/2; } return editorRect; } /** * Removes all associations between the TableTreeEditor and the cell in the table tree. The * TableTree and the editor Control are <b>not</b> disposed. */ public override void dispose () { if (tableTree !is null && !tableTree.isDisposed()) { Table table = tableTree.getTable(); if (table !is null && !table.isDisposed()) { if (this.column > -1 && this.column < table.getColumnCount()){ TableColumn tableColumn = table.getColumn(this.column); tableColumn.removeControlListener(columnListener); } } if (treeListener !is null) tableTree.removeTreeListener(treeListener); } treeListener = null; columnListener = null; tableTree = null; item = null; column = -1; super.dispose(); } /** * Returns the zero based index of the column of the cell being tracked by this editor. * * @return the zero based index of the column of the cell being tracked by this editor */ public int getColumn () { return column; } /** * Returns the TableTreeItem for the row of the cell being tracked by this editor. * * @return the TableTreeItem for the row of the cell being tracked by this editor */ public TableTreeItem getItem () { return item; } public void setColumn(int column) { Table table = tableTree.getTable(); int columnCount = table.getColumnCount(); // Separately handle the case where the table has no TableColumns. // In this situation, there is a single default column. if (columnCount is 0) { this.column = (column is 0) ? 0 : -1; layout(); return; } if (this.column > -1 && this.column < columnCount){ TableColumn tableColumn = table.getColumn(this.column); tableColumn.removeControlListener(columnListener); this.column = -1; } if (column < 0 || column >= table.getColumnCount()) return; this.column = column; TableColumn tableColumn = table.getColumn(this.column); tableColumn.addControlListener(columnListener); layout(); } public void setItem (TableTreeItem item) { this.item = item; layout(); } /** * Specify the Control that is to be displayed and the cell in the table that it is to be positioned above. * * <p>Note: The Control provided as the editor <b>must</b> be created with its parent being the Table control * specified in the TableEditor constructor. * * @param editor the Control that is displayed above the cell being edited * @param item the TableItem for the row of the cell being tracked by this editor * @param column the zero based index of the column of the cell being tracked by this editor */ alias ControlEditor.setEditor setEditor; public void setEditor (Control editor, TableTreeItem item, int column) { setItem(item); setColumn(column); setEditor(editor); } public override void layout () { if (tableTree is null || tableTree.isDisposed()) return; if (item is null || item.isDisposed()) return; Table table = tableTree.getTable(); int columnCount = table.getColumnCount(); if (columnCount is 0 && column !is 0) return; if (columnCount > 0 && (column < 0 || column >= columnCount)) return; super.layout(); } }