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/*******************************************************************************
* 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.swt.examples.controlexample;
import org.eclipse.swt.*;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.widgets.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.events.*;
class TreeTab extends ScrollableTab {
/* Example widgets and groups that contain them */
Tree tree1, tree2;
TreeItem textNode1, imageNode1;
Group treeGroup, imageTreeGroup, treeItemGroup;
/* Style widgets added to the "Style" group */
Button checkButton;
/* Controls and resources added to the "Colors" group */
Button itemForegroundButton, itemBackgroundButton;
Color itemForegroundColor, itemBackgroundColor;
Image itemForegroundImage, itemBackgroundImage;
/**
* Creates the Tab within a given instance of ControlExample.
*/
TreeTab(ControlExample instance) {
super(instance);
}
/**
* Creates the "Colors" group.
*/
void createColorGroup () {
super.createColorGroup();
treeItemGroup = new Group (colorGroup, SWT.NONE);
treeItemGroup.setText (ControlExample.getResourceString ("Tree_Item_Colors"));
GridData data = new GridData ();
data.horizontalSpan = 2;
treeItemGroup.setLayoutData (data);
treeItemGroup.setLayout (new GridLayout (2, false));
new Label (treeItemGroup, SWT.NONE).setText (ControlExample.getResourceString ("Item_Foreground_Color"));
itemForegroundButton = new Button (treeItemGroup, SWT.PUSH);
new Label (treeItemGroup, SWT.NONE).setText (ControlExample.getResourceString ("Item_Background_Color"));
itemBackgroundButton = new Button (treeItemGroup, SWT.PUSH);
Shell shell = colorGroup.getShell ();
final ColorDialog foregroundDialog = new ColorDialog (shell);
final ColorDialog backgroundDialog = new ColorDialog (shell);
int imageSize = 12;
Display display = shell.getDisplay ();
itemForegroundImage = new Image(display, imageSize, imageSize);
itemBackgroundImage = new Image(display, imageSize, imageSize);
/* Add listeners to set the colors and font */
itemForegroundButton.setImage(itemForegroundImage);
itemForegroundButton.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent event) {
Color oldColor = itemForegroundColor;
if (oldColor == null) oldColor = textNode1.getForeground ();
foregroundDialog.setRGB(oldColor.getRGB());
RGB rgb = foregroundDialog.open();
if (rgb == null) return;
oldColor = itemForegroundColor;
itemForegroundColor = new Color (event.display, rgb);
setItemForeground ();
if (oldColor != null) oldColor.dispose ();
}
});
itemBackgroundButton.setImage(itemBackgroundImage);
itemBackgroundButton.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent event) {
Color oldColor = itemBackgroundColor;
if (oldColor == null) oldColor = textNode1.getBackground ();
backgroundDialog.setRGB(oldColor.getRGB());
RGB rgb = backgroundDialog.open();
if (rgb == null) return;
oldColor = itemBackgroundColor;
itemBackgroundColor = new Color (event.display, rgb);
setItemBackground ();
if (oldColor != null) oldColor.dispose ();
}
});
shell.addDisposeListener(new DisposeListener() {
public void widgetDisposed(DisposeEvent event) {
if (itemBackgroundImage != null) itemBackgroundImage.dispose();
if (itemForegroundImage != null) itemForegroundImage.dispose();
if (itemBackgroundColor != null) itemBackgroundColor.dispose();
if (itemForegroundColor != null) itemForegroundColor.dispose();
itemBackgroundColor = null;
itemForegroundColor = null;
}
});
}
/**
* Creates the "Example" group.
*/
void createExampleGroup () {
super.createExampleGroup ();
/* Create a group for the text tree */
treeGroup = new Group (exampleGroup, SWT.NONE);
treeGroup.setLayout (new GridLayout ());
treeGroup.setLayoutData (new GridData (GridData.GRAB_HORIZONTAL | GridData.HORIZONTAL_ALIGN_FILL | GridData.VERTICAL_ALIGN_FILL));
treeGroup.setText ("Tree");
/* Create a group for the image tree */
imageTreeGroup = new Group (exampleGroup, SWT.NONE);
imageTreeGroup.setLayout (new GridLayout ());
imageTreeGroup.setLayoutData (new GridData (GridData.GRAB_HORIZONTAL | GridData.HORIZONTAL_ALIGN_FILL | GridData.VERTICAL_ALIGN_FILL));
imageTreeGroup.setText (ControlExample.getResourceString("Tree_With_Images"));
}
/**
* Creates the "Example" widgets.
*/
void createExampleWidgets () {
/* Compute the widget style */
int style = getDefaultStyle();
if (singleButton.getSelection()) style |= SWT.SINGLE;
if (multiButton.getSelection()) style |= SWT.MULTI;
if (checkButton.getSelection()) style |= SWT.CHECK;
if (borderButton.getSelection()) style |= SWT.BORDER;
/* Create the text tree */
tree1 = new Tree (treeGroup, style);
textNode1 = new TreeItem (tree1, SWT.NONE);
textNode1.setText (ControlExample.getResourceString("Node_1"));
TreeItem node2 = new TreeItem (tree1, SWT.NONE);
node2.setText (ControlExample.getResourceString("Node_2"));
TreeItem node3 = new TreeItem (tree1, SWT.NONE);
node3.setText (ControlExample.getResourceString("Node_3"));
TreeItem node4 = new TreeItem (tree1, SWT.NONE);
node4.setText (ControlExample.getResourceString("Node_4"));
TreeItem node1_1 = new TreeItem (textNode1, SWT.NONE);
node1_1.setText (ControlExample.getResourceString("Node_1_1"));
TreeItem node2_1 = new TreeItem (node2, SWT.NONE);
node2_1.setText (ControlExample.getResourceString("Node_2_1"));
TreeItem node3_1 = new TreeItem (node3, SWT.NONE);
node3_1.setText (ControlExample.getResourceString("Node_3_1"));
TreeItem node2_2 = new TreeItem (node2, SWT.NONE);
node2_2.setText (ControlExample.getResourceString("Node_2_2"));
TreeItem node2_2_1 = new TreeItem (node2_2, SWT.NONE);
node2_2_1.setText (ControlExample.getResourceString("Node_2_2_1"));
/* Create the image tree */
tree2 = new Tree (imageTreeGroup, style);
imageNode1 = new TreeItem (tree2, SWT.NONE);
imageNode1.setText (ControlExample.getResourceString("Node_1"));
imageNode1.setImage (instance.images[ControlExample.ciClosedFolder]);
node2 = new TreeItem (tree2, SWT.NONE);
node2.setText (ControlExample.getResourceString("Node_2"));
node2.setImage (instance.images[ControlExample.ciClosedFolder]);
node3 = new TreeItem (tree2, SWT.NONE);
node3.setText (ControlExample.getResourceString("Node_3"));
node3.setImage (instance.images[ControlExample.ciClosedFolder]);
node4 = new TreeItem (tree2, SWT.NONE);
node4.setText (ControlExample.getResourceString("Node_4"));
node4.setImage (instance.images[ControlExample.ciClosedFolder]);
node1_1 = new TreeItem (imageNode1, SWT.NONE);
node1_1.setText (ControlExample.getResourceString("Node_1_1"));
node1_1.setImage (instance.images[ControlExample.ciClosedFolder]);
node2_1 = new TreeItem (node2, SWT.NONE);
node2_1.setText (ControlExample.getResourceString("Node_2_1"));
node2_1.setImage (instance.images[ControlExample.ciClosedFolder]);
node3_1 = new TreeItem (node3, SWT.NONE);
node3_1.setText (ControlExample.getResourceString("Node_3_1"));
node3_1.setImage (instance.images[ControlExample.ciClosedFolder]);
node2_2 = new TreeItem(node2, SWT.NONE);
node2_2.setText (ControlExample.getResourceString("Node_2_2"));
node2_2.setImage (instance.images[ControlExample.ciClosedFolder]);
node2_2_1 = new TreeItem (node2_2, SWT.NONE);
node2_2_1.setText (ControlExample.getResourceString("Node_2_2_1"));
node2_2_1.setImage (instance.images[ControlExample.ciClosedFolder]);
}
/**
* Creates the "Style" group.
*/
void createStyleGroup() {
super.createStyleGroup();
/* Create the extra widgets */
checkButton = new Button (styleGroup, SWT.CHECK);
checkButton.setText ("SWT.CHECK");
}
/**
* Gets the "Example" widget children.
*/
Control [] getExampleWidgets () {
return new Control [] {tree1, tree2};
}
/**
* Gets the text for the tab folder item.
*/
String getTabText () {
return "Tree";
}
/**
* 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 != null) oldColor.dispose();
oldColor = itemBackgroundColor;
itemBackgroundColor = null;
setItemBackground ();
if (oldColor != null) oldColor.dispose();
}
/**
* Sets the state of the "Example" widgets.
*/
void setExampleWidgetState () {
super.setExampleWidgetState ();
setItemBackground ();
setItemForeground ();
checkButton.setSelection ((tree1.getStyle () & SWT.CHECK) != 0);
}
/**
* Sets the background color of the Node 1 TreeItems.
*/
void setItemBackground () {
textNode1.setBackground (itemBackgroundColor);
imageNode1.setBackground (itemBackgroundColor);
/* Set the background button's color to match the color just set. */
Color color = itemBackgroundColor;
if (color == null) color = textNode1.getBackground ();
drawImage (itemForegroundImage, color);
itemBackgroundButton.setImage (itemForegroundImage);
}
/**
* Sets the foreground color of Node 1 TreeItems.
*/
void setItemForeground () {
textNode1.setForeground (itemForegroundColor);
imageNode1.setForeground (itemForegroundColor);
/* Set the foreground button's color to match the color just set. */
Color color = itemForegroundColor;
if (color == null) color = textNode1.getForeground ();
drawImage (itemBackgroundImage, color);
itemForegroundButton.setImage (itemBackgroundImage);
}
}
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