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authorGrant Gayed2011-11-14 19:35:47 +0000
committerGrant Gayed2011-11-14 19:35:47 +0000
commitbc20cda6174695e5e271b964d9b764a6bb2cf603 (patch)
tree79b32b34818d1ab65a74a672e920f9a5f331ba66 /examples
parenta9d842328be558230a1d5c559dbb997b71eda75e (diff)
downloadeclipse.platform.swt-bc20cda6174695e5e271b964d9b764a6bb2cf603.tar.gz
eclipse.platform.swt-bc20cda6174695e5e271b964d9b764a6bb2cf603.tar.xz
eclipse.platform.swt-bc20cda6174695e5e271b964d9b764a6bb2cf603.zip
initial
Diffstat (limited to 'examples')
-rw-r--r--examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet360.java155
1 files changed, 155 insertions, 0 deletions
diff --git a/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet360.java b/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet360.java
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+++ b/examples/org.eclipse.swt.snippets/src/org/eclipse/swt/snippets/Snippet360.java
@@ -0,0 +1,155 @@
+/*******************************************************************************
+ * Copyright (c) 2011 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.snippets;
+
+/*
+ * TreeCursor example snippet: navigate a Tree's cells with the arrow keys.
+ * Edit when user hits Return key. Exit edit mode by hitting Escape (cancels edit)
+ * or Return (applies edit to tree). Expand/Collapse with Ctrl+Arrow keys.
+ *
+ * For a list of all SWT example snippets see
+ * http://www.eclipse.org/swt/snippets/
+ *
+ * @since 3.8
+ */
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.custom.*;
+import org.eclipse.swt.events.*;
+import org.eclipse.swt.layout.*;
+import org.eclipse.swt.widgets.*;
+
+public class Snippet360 {
+
+public static void main(String[] args) {
+ Display display = new Display();
+ Shell shell = new Shell(display);
+ shell.setLayout(new GridLayout());
+
+ // create a a tree with 3 columns and fill with data
+ final Tree tree = new Tree(shell, SWT.BORDER | SWT.MULTI | SWT.FULL_SELECTION);
+ tree.setLayoutData(new GridData(GridData.FILL_BOTH));
+ tree.setHeaderVisible(true);
+ TreeColumn column1 = new TreeColumn(tree, SWT.NONE);
+ TreeColumn column2 = new TreeColumn(tree, SWT.NONE);
+ TreeColumn column3 = new TreeColumn(tree, SWT.NONE);
+ for (int i = 0; i < 9; i++) {
+ TreeItem item = new TreeItem(tree, SWT.NONE);
+ item.setText(new String[] { "root " + i + " 0", "root " + i + " 1", "root " + i + " 2" });
+ for (int j = 0; j < 9; j++) {
+ TreeItem item2 = new TreeItem(item, SWT.NONE);
+ item2.setText(new String[] { "child " + j + " 0", "child " + j + " 1", "child " + j + " 2" });
+ TreeItem current = item2;
+ for (int k = 0; k < 5; k++) {
+ TreeItem item3 = new TreeItem(current, SWT.NONE);
+ item3.setText(new String[] { "descendent " + k + " 0", "descendent " + k + " 1", "descendent " + k + " 2" });
+ current = item3;
+ }
+ }
+ }
+ column1.setWidth(200);
+ column2.setWidth(100);
+ column3.setWidth(100);
+
+ // create a TreeCursor to navigate around the tree
+ final TreeCursor cursor = new TreeCursor(tree, SWT.NONE);
+ // create an editor to edit the cell when the user hits "ENTER"
+ // while over a cell in the tree
+ final ControlEditor editor = new ControlEditor(cursor);
+ editor.grabHorizontal = true;
+ editor.grabVertical = true;
+
+ cursor.addSelectionListener(new SelectionAdapter() {
+ // when the TreeEditor is over a cell, select the corresponding row
+ // in the tree
+ public void widgetSelected(SelectionEvent e) {
+ tree.setSelection(new TreeItem[] { cursor.getRow() });
+ }
+
+ // when the user hits "ENTER" in the TreeCursor, pop up a text
+ // editor so that they can change the text of the cell
+ public void widgetDefaultSelected(SelectionEvent e) {
+ final Text text = new Text(cursor, SWT.NONE);
+ TreeItem row = cursor.getRow();
+ int column = cursor.getColumn();
+ text.setText(row.getText(column));
+ text.addKeyListener(new KeyAdapter() {
+ public void keyPressed(KeyEvent e) {
+ // close the text editor and copy the data over
+ // when the user hits "ENTER"
+ if (e.character == SWT.CR) {
+ TreeItem row = cursor.getRow();
+ int column = cursor.getColumn();
+ row.setText(column, text.getText());
+ text.dispose();
+ }
+ // close the text editor when the user hits "ESC"
+ if (e.character == SWT.ESC) {
+ text.dispose();
+ }
+ }
+ });
+ editor.setEditor(text);
+ text.setFocus();
+ }
+ });
+ // Hide the TreeCursor when the user hits the "MOD1" or "MOD2" key.
+ // This allows the user to select multiple items in the tree.
+ cursor.addKeyListener(new KeyAdapter() {
+ public void keyPressed(KeyEvent e) {
+ if (e.keyCode == SWT.MOD1 || e.keyCode == SWT.MOD2
+ || (e.stateMask & SWT.MOD1) != 0
+ || (e.stateMask & SWT.MOD2) != 0) {
+ cursor.setVisible(false);
+ }
+ }
+ });
+ // Show the TreeCursor when the user releases the "MOD2" or "MOD1" key.
+ // This signals the end of the multiple selection task.
+ tree.addKeyListener(new KeyListener() {
+ public void keyReleased(KeyEvent e) {
+ if (e.keyCode == SWT.MOD1 && (e.stateMask & SWT.MOD2) != 0) return;
+ if (e.keyCode == SWT.MOD2 && (e.stateMask & SWT.MOD1) != 0) return;
+ if (e.keyCode != SWT.MOD1 && (e.stateMask & SWT.MOD1) != 0) return;
+ if (e.keyCode != SWT.MOD2 && (e.stateMask & SWT.MOD2) != 0) return;
+
+ TreeItem[] selection = tree.getSelection();
+ TreeItem row = (selection.length == 0) ? tree.getItem(tree.indexOf(tree.getTopItem())) : selection[0];
+ tree.showItem(row);
+ cursor.setSelection(row, cursor.getColumn());
+ cursor.setVisible(true);
+ cursor.setFocus();
+ }
+ public void keyPressed(KeyEvent e) {
+ switch (e.keyCode) {
+ case SWT.ARROW_LEFT:
+ case SWT.ARROW_RIGHT: {
+ if ((e.stateMask & SWT.MOD1) != 0) {
+ TreeItem[] selection = tree.getSelection();
+ if (selection.length > 0) {
+ selection[0].setExpanded(e.keyCode == SWT.ARROW_RIGHT);
+ }
+ break;
+ }
+ }
+ }
+ }
+ });
+
+ shell.pack();
+ shell.open();
+ while (!shell.isDisposed()) {
+ if (!display.readAndDispatch())
+ display.sleep();
+ }
+ display.dispose();
+}
+
+}

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