trace/traceviewer/com.nokia.traceviewer.eventhandler/src/com/nokia/traceviewer/eventhandler/TrimInformation.java
changeset 11 5b9d4d8641ce
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10:ed1c9f64298a 11:5b9d4d8641ce
       
     1 /*
       
     2  * Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies). 
       
     3  * All rights reserved.
       
     4  * This component and the accompanying materials are made available
       
     5  * under the terms of "Eclipse Public License v1.0"
       
     6  * which accompanies this distribution, and is available
       
     7  * at the URL "http://www.eclipse.org/legal/epl-v10.html".
       
     8  *
       
     9  * Initial Contributors:
       
    10  * Nokia Corporation - initial contribution.
       
    11  *
       
    12  * Contributors:
       
    13  *
       
    14  * Description:
       
    15  *
       
    16  * Trim Information
       
    17  *
       
    18  */
       
    19 package com.nokia.traceviewer.eventhandler;
       
    20 
       
    21 import org.eclipse.jface.action.IContributionManager;
       
    22 import org.eclipse.swt.SWT;
       
    23 import org.eclipse.swt.layout.GridData;
       
    24 import org.eclipse.swt.layout.GridLayout;
       
    25 import org.eclipse.swt.widgets.Composite;
       
    26 import org.eclipse.swt.widgets.Control;
       
    27 import org.eclipse.swt.widgets.Label;
       
    28 import org.eclipse.ui.menus.WorkbenchWindowControlContribution;
       
    29 
       
    30 /**
       
    31  * Trim Information
       
    32  */
       
    33 public final class TrimInformation extends WorkbenchWindowControlContribution {
       
    34 	/**
       
    35 	 * Composite of the trim
       
    36 	 */
       
    37 	private static Composite composite;
       
    38 
       
    39 	/**
       
    40 	 * Text of the trim
       
    41 	 */
       
    42 	private static Label textLabel;
       
    43 
       
    44 	/**
       
    45 	 * Text inside the trim
       
    46 	 */
       
    47 	private static String textInTheTrim = ""; //$NON-NLS-1$
       
    48 
       
    49 	/**
       
    50 	 * Trim parent
       
    51 	 */
       
    52 	private static IContributionManager trimParent;
       
    53 
       
    54 	/*
       
    55 	 * (non-Javadoc)
       
    56 	 * 
       
    57 	 * @see org.eclipse.jface.menus.AbstractTrimWidget#dispose()
       
    58 	 */
       
    59 	@Override
       
    60 	public void dispose() {
       
    61 		if (composite != null && !composite.isDisposed()) {
       
    62 			composite.dispose();
       
    63 		}
       
    64 		if (textLabel != null && !textLabel.isDisposed()) {
       
    65 			textLabel.dispose();
       
    66 		}
       
    67 		composite = null;
       
    68 		textLabel = null;
       
    69 	}
       
    70 
       
    71 	/**
       
    72 	 * Sets text to label
       
    73 	 * 
       
    74 	 * @param labelText
       
    75 	 *            text to insert
       
    76 	 */
       
    77 	public static void setTextToLabel(String labelText) {
       
    78 		textInTheTrim = labelText;
       
    79 
       
    80 		// Only update the trim parent when there's something in our trim
       
    81 		if (!textInTheTrim.equals("")) { //$NON-NLS-1$
       
    82 			trimParent.update(true);
       
    83 
       
    84 			// Empty, let's not resize the trim parent but only update the text
       
    85 		} else {
       
    86 			textLabel.setText(textInTheTrim);
       
    87 		}
       
    88 	}
       
    89 
       
    90 	/*
       
    91 	 * (non-Javadoc)
       
    92 	 * 
       
    93 	 * @see
       
    94 	 * org.eclipse.jface.action.ControlContribution#createControl(org.eclipse
       
    95 	 * .swt.widgets.Composite)
       
    96 	 */
       
    97 	@Override
       
    98 	protected Control createControl(Composite parent) {
       
    99 		trimParent = getParent();
       
   100 
       
   101 		// Create a composite to place the label in
       
   102 		composite = new Composite(parent, SWT.NULL);
       
   103 
       
   104 		// Give some room around the control
       
   105 		GridLayout layout = new GridLayout();
       
   106 		layout.marginHeight = 0;
       
   107 		composite.setLayout(layout);
       
   108 
       
   109 		// Create a label for the trim.
       
   110 		textLabel = new Label(composite, SWT.NULL);
       
   111 		textLabel
       
   112 				.setLayoutData(new GridData(SWT.LEFT, SWT.CENTER, false, true));
       
   113 		textLabel.setText(textInTheTrim);
       
   114 		return composite;
       
   115 	}
       
   116 
       
   117 	/*
       
   118 	 * (non-Javadoc)
       
   119 	 * 
       
   120 	 * @see org.eclipse.jface.action.ContributionItem#isDynamic()
       
   121 	 */
       
   122 	@Override
       
   123 	public boolean isDynamic() {
       
   124 		return true;
       
   125 	}
       
   126 }