blob: 9542333c05018568ee8c75017d7b971a418733c6 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
|
/*******************************************************************************
* Copyright (c) 2000, 2010 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.ui.texteditor;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Text;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.dialogs.IMessageProvider;
import org.eclipse.jface.resource.JFaceColors;
import org.eclipse.jface.resource.JFaceResources;
/**
* The MessageRegion is the optional area to
* show messages in the page.
* <p>
* XXX: Copied from org.eclipse.jface.preference.PreferencePage.MessageRegion
* see https://bugs.eclipse.org/bugs/show_bug.cgi?id=84061
* </p>
*
* @since 3.1
*/
class MessageRegion {
private Text messageText;
private Label messageImageLabel;
private Composite messageComposite;
private String lastMessageText = "";//$NON-NLS-1$
private int lastMessageType;
/**
* Create a new instance of the receiver.
*/
public MessageRegion() {
//No initial behavior
}
/**
* Create the contents for the receiver.
*
* @param parent the Composite that the children will be created in
*/
public void createContents(Composite parent) {
messageComposite = new Composite(parent, SWT.NONE);
GridLayout messageLayout = new GridLayout();
messageLayout.numColumns = 2;
messageLayout.marginWidth = 0;
messageLayout.marginHeight = 0;
messageLayout.makeColumnsEqualWidth = false;
messageComposite.setLayout(messageLayout);
messageImageLabel = new Label(messageComposite, SWT.NONE);
GridData imageData = new GridData(GridData.VERTICAL_ALIGN_CENTER);
Image sizingImage = JFaceResources.getImage(Dialog.DLG_IMG_MESSAGE_ERROR);
Rectangle imageBounds;
if(sizingImage == null)
imageBounds = new Rectangle(0,0,IDialogConstants.VERTICAL_MARGIN * 2,IDialogConstants.VERTICAL_MARGIN * 2);
else
imageBounds = sizingImage.getBounds();
imageData.heightHint = imageBounds.height + IDialogConstants.VERTICAL_SPACING;
imageData.widthHint = imageBounds.width + IDialogConstants.HORIZONTAL_SPACING;
messageImageLabel.setLayoutData(imageData);
messageText = new Text(messageComposite, SWT.NONE);
messageText.setEditable(false);
messageText.setBackground(parent.getDisplay().getSystemColor(
SWT.COLOR_WIDGET_BACKGROUND));
GridData textData = new GridData(GridData.GRAB_HORIZONTAL | GridData.FILL_HORIZONTAL
| GridData.VERTICAL_ALIGN_CENTER);
messageText.setLayoutData(textData);
hideRegion();
}
/**
* Set the layoutData for the messageArea. In most cases this will be a copy of the layoutData
* used in setTitleLayoutData.
*
* @param layoutData the layoutData for the message area composite.
*/
public void setMessageLayoutData(Object layoutData) {
messageComposite.setLayoutData(layoutData);
}
/**
* Show the new message in the message text and update the image. Base the background color on
* whether or not there are errors.
*
* @param newMessage The new value for the message
* @param newType One of the IMessageProvider constants. If newType is IMessageProvider.NONE
* show the title.
* @see IMessageProvider
*/
public void updateText(String newMessage, int newType) {
Image newImage = null;
boolean showingError = false;
switch (newType) {
case IMessageProvider.NONE:
hideRegion();
return;
case IMessageProvider.INFORMATION:
newImage = JFaceResources.getImage(Dialog.DLG_IMG_MESSAGE_INFO);
break;
case IMessageProvider.WARNING:
newImage = JFaceResources.getImage(Dialog.DLG_IMG_MESSAGE_WARNING);
break;
case IMessageProvider.ERROR:
newImage = JFaceResources.getImage(Dialog.DLG_IMG_MESSAGE_ERROR);
showingError = true;
break;
}
if(newMessage == null){//No message so clear the area
hideRegion();
return;
}
showRegion();
// Any more updates required
if (newMessage.equals(messageText.getText())
&& newImage == messageImageLabel.getImage())
return;
messageImageLabel.setImage(newImage);
messageText.setText(newMessage);
if (showingError)
setMessageColors(JFaceColors.getErrorBackground(messageComposite.getDisplay()));
else {
lastMessageText = newMessage;
setMessageColors(JFaceColors.getBannerBackground(messageComposite.getDisplay()));
}
}
/**
* Show and enable the widgets in the message region
*/
private void showRegion() {
messageComposite.setVisible(true);
}
/**
* Hide the message region and clear out the caches.
*/
private void hideRegion() {
messageComposite.setVisible(false);
lastMessageText = null;
lastMessageType = IMessageProvider.NONE;
}
/**
* Set the colors of the message area.
*
* @param color the color to be use in the message area.
*/
private void setMessageColors(Color color) {
messageText.setBackground(color);
messageComposite.setBackground(color);
messageImageLabel.setBackground(color);
}
/**
* Clear the error message. Restore the previously displayed message if
* there is one, if not restore the title label.
*
*/
public void clearErrorMessage() {
updateText(lastMessageText, lastMessageType);
}
}
|
