author | hgs |
Mon, 04 Oct 2010 11:29:25 +0300 | |
changeset 78 | 71ad690e91f5 |
parent 21 | 2a9601315dfc |
permissions | -rw-r--r-- |
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package org.eclipse.swt.internal.extension; |
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import org.eclipse.ercp.swt.mobile.ConstrainedText; |
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import org.eclipse.ercp.swt.mobile.Internal_MobilePackageSupport; |
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import org.eclipse.swt.SWTException; |
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import org.eclipse.swt.internal.qt.OS; |
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import org.eclipse.swt.widgets.Composite; |
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import org.eclipse.swt.widgets.Event; |
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import org.eclipse.swt.widgets.Internal_PackageSupport; |
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import org.eclipse.swt.widgets.Listener; |
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|
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/** |
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* An extension class to ConstrainedText. |
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* |
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* <p> |
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* To listen to caret movement or selection change events, create listeners |
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* of type <code>SWTExtension.CaretMoved</code> or |
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* <code>SWTExtension.ContentSelected</code>. |
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* </p><p> |
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* Here is an example of using a <code>ConstrainedTextExtension</code> |
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* with the extended listeners: |
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* <code><pre> |
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* ConstrainedTextExtension text = new ConstrainedTextExtension(shell, SWT.LEFT, ConstrainedText.DECIMAL); |
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* text.setText("123456789"); |
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* |
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* text.addListener(SWTExtension.CaretMoved, new Listener() { |
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* public void handleEvent(Event event) { |
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* System.out.println("Caret moved, new position "+event.x); |
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* }}); |
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* |
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* text.addListener(SWTExtension.ContentSelected, new Listener() { |
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* public void handleEvent(Event event) { |
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* System.out.println("Selection changed, pos "+event.x+", len "+event.count); |
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* }}); |
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* </pre></code></p> |
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*/ |
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public class ConstrainedTextExtension extends ConstrainedText { |
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|
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public ConstrainedTextExtension(Composite parent, int style, int constrainedStyle) { |
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super(parent, style, constrainedStyle, true); |
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} |
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|
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/** |
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* Adds the listener to the collection of listeners who will |
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* be notified when an event of the given type occurs. When the |
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* event does occur in the widget, the listener is notified by |
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* sending it the <code>handleEvent()</code> message. The event |
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* type is one of the event constants defined in class <code>SWT</code>. |
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* |
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* To listen to caret moved event, add a listener of type |
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* <code>SWTExtension.CaretMoved</code>. New position of the caret is placed |
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* in <code>event.x</code>. |
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* |
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* To listen to content selection event, add a listener of type |
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* <code>SWTExtension.ContentSelected</code>. Index of the first selected |
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* character is placed in <code>event.x</code>, number of selected characters |
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* is placed in <code>event.count</code>. |
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* |
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* @param eventType the type of event to listen for |
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* @param listener the listener which should be notified when the event occurs |
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* |
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* @exception IllegalArgumentException <ul> |
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* <li>ERROR_NULL_ARGUMENT - if the listener is null</li> |
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* </ul> |
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* @exception SWTException <ul> |
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* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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* </ul> |
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* |
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* @see Listener |
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* @see SWTExtension |
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* @see Event |
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* @see #removeListener(int, Listener) |
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* @see #notifyListeners |
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*/ |
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public void addListener(int eventType, Listener listener) { |
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super.addListener(eventType, listener); |
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} |
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|
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/** |
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* Returns the number of lines. |
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* |
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* @return the number of lines in the widget |
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* |
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* @exception SWTException <ul> |
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* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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* </ul> |
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*/ |
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public int getLineCount() { |
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checkWidget(); |
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return 1; |
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} |
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|
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/** |
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* Returns the height of a line. |
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* |
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98 |
* @return the height of a row of text |
2a9601315dfc
Revision: v2.1.22
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99 |
* |
2a9601315dfc
Revision: v2.1.22
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100 |
* @exception SWTException <ul> |
2a9601315dfc
Revision: v2.1.22
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101 |
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
2a9601315dfc
Revision: v2.1.22
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102 |
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
2a9601315dfc
Revision: v2.1.22
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103 |
* </ul> |
2a9601315dfc
Revision: v2.1.22
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104 |
*/ |
2a9601315dfc
Revision: v2.1.22
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105 |
public int getLineHeight () { |
2a9601315dfc
Revision: v2.1.22
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106 |
checkWidget(); |
2a9601315dfc
Revision: v2.1.22
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107 |
return OS.QWidget_QFontMetrics_lineSpacing(Internal_PackageSupport.handle(this)); |
2a9601315dfc
Revision: v2.1.22
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108 |
} |
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Revision: v2.1.22
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109 |
|
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Revision: v2.1.22
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110 |
/** |
2a9601315dfc
Revision: v2.1.22
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111 |
* Gets the selected text, or an empty string if there is no current selection. |
2a9601315dfc
Revision: v2.1.22
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112 |
* |
2a9601315dfc
Revision: v2.1.22
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113 |
* @return the selected text |
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Revision: v2.1.22
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114 |
* |
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Revision: v2.1.22
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115 |
* @exception SWTException <ul> |
2a9601315dfc
Revision: v2.1.22
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116 |
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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Revision: v2.1.22
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117 |
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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Revision: v2.1.22
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118 |
* </ul> |
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Revision: v2.1.22
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119 |
*/ |
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Revision: v2.1.22
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public String getSelectionText () { |
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Revision: v2.1.22
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return Internal_MobilePackageSupport.getSelectionText(this); |
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Revision: v2.1.22
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122 |
} |
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Revision: v2.1.22
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123 |
|
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Revision: v2.1.22
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124 |
/** |
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Revision: v2.1.22
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125 |
* Returns the zero-relative index of the line which is currently |
2a9601315dfc
Revision: v2.1.22
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126 |
* at the top of the receiver. |
2a9601315dfc
Revision: v2.1.22
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* <p> |
2a9601315dfc
Revision: v2.1.22
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* This index can change when lines are scrolled or new lines are added or removed. |
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Revision: v2.1.22
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129 |
* </p> |
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Revision: v2.1.22
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* |
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Revision: v2.1.22
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* @return the index of the top line |
2a9601315dfc
Revision: v2.1.22
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132 |
* |
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Revision: v2.1.22
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* @exception SWTException <ul> |
2a9601315dfc
Revision: v2.1.22
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* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
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Revision: v2.1.22
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135 |
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
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Revision: v2.1.22
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136 |
* </ul> |
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Revision: v2.1.22
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137 |
*/ |
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Revision: v2.1.22
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public int getTopIndex () { |
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Revision: v2.1.22
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checkWidget (); |
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Revision: v2.1.22
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return 0; |
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Revision: v2.1.22
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} |
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Revision: v2.1.22
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|
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Revision: v2.1.22
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/** |
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Revision: v2.1.22
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* Returns the top pixel. |
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Revision: v2.1.22
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* <p> |
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Revision: v2.1.22
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* The top pixel is the pixel position of the line |
2a9601315dfc
Revision: v2.1.22
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* that is currently at the top of the widget. On |
2a9601315dfc
Revision: v2.1.22
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148 |
* some platforms, a text widget can be scrolled by |
2a9601315dfc
Revision: v2.1.22
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* pixels instead of lines so that a partial line |
2a9601315dfc
Revision: v2.1.22
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* is displayed at the top of the widget. |
2a9601315dfc
Revision: v2.1.22
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151 |
* </p><p> |
2a9601315dfc
Revision: v2.1.22
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* The top pixel changes when the widget is scrolled. |
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Revision: v2.1.22
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* The top pixel does not include the widget trimming. |
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Revision: v2.1.22
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154 |
* </p> |
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Revision: v2.1.22
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155 |
* |
2a9601315dfc
Revision: v2.1.22
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156 |
* @return the pixel position of the top line |
2a9601315dfc
Revision: v2.1.22
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157 |
* |
2a9601315dfc
Revision: v2.1.22
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* @exception SWTException <ul> |
2a9601315dfc
Revision: v2.1.22
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159 |
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> |
2a9601315dfc
Revision: v2.1.22
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|
160 |
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
2a9601315dfc
Revision: v2.1.22
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161 |
* </ul> |
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Revision: v2.1.22
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162 |
*/ |
2a9601315dfc
Revision: v2.1.22
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163 |
public int getTopPixel () { |
2a9601315dfc
Revision: v2.1.22
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164 |
checkWidget (); |
2a9601315dfc
Revision: v2.1.22
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165 |
return 0; |
2a9601315dfc
Revision: v2.1.22
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166 |
} |
2a9601315dfc
Revision: v2.1.22
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167 |
} |