1 /*******************************************************************************
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2 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
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3 * in Industry THTH ry.
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4 * All rights reserved. This program and the accompanying materials
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5 * are made available under the terms of the Eclipse Public License v1.0
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6 * which accompanies this distribution, and is available at
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7 * http://www.eclipse.org/legal/epl-v10.html
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10 * VTT Technical Research Centre of Finland - initial API and implementation
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11 *******************************************************************************/
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12 package org.simantics.diagram.symbollibrary.ui;
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14 import org.eclipse.jface.layout.GridDataFactory;
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15 import org.eclipse.jface.layout.GridLayoutFactory;
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16 import org.eclipse.jface.resource.FontDescriptor;
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17 import org.eclipse.jface.resource.ImageDescriptor;
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18 import org.eclipse.jface.resource.JFaceResources;
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19 import org.eclipse.jface.resource.LocalResourceManager;
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20 import org.eclipse.swt.SWT;
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21 import org.eclipse.swt.accessibility.ACC;
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22 import org.eclipse.swt.accessibility.AccessibleAdapter;
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23 import org.eclipse.swt.accessibility.AccessibleControlAdapter;
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24 import org.eclipse.swt.accessibility.AccessibleControlEvent;
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25 import org.eclipse.swt.accessibility.AccessibleEvent;
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26 import org.eclipse.swt.events.MouseAdapter;
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27 import org.eclipse.swt.events.MouseEvent;
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28 import org.eclipse.swt.events.MouseMoveListener;
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29 import org.eclipse.swt.events.MouseTrackListener;
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30 import org.eclipse.swt.events.SelectionAdapter;
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31 import org.eclipse.swt.events.SelectionEvent;
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32 import org.eclipse.swt.graphics.Image;
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33 import org.eclipse.swt.graphics.Point;
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34 import org.eclipse.swt.layout.GridData;
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35 import org.eclipse.swt.widgets.Composite;
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36 import org.eclipse.swt.widgets.Control;
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37 import org.eclipse.swt.widgets.Display;
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38 import org.eclipse.swt.widgets.Label;
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39 import org.eclipse.swt.widgets.Text;
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40 import org.eclipse.ui.ISharedImages;
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41 import org.eclipse.ui.internal.WorkbenchImages;
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42 import org.eclipse.ui.internal.WorkbenchMessages;
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44 @SuppressWarnings("restriction")
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45 public class FilterArea extends Composite {
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47 private final LocalResourceManager resourceManager;
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49 private Text filterText;
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52 * The control representing the clear button for the filter text entry. This
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53 * value may be <code>null</code> if no such button exists, or if the
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54 * controls have not yet been created.
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56 protected Control clearButtonControl;
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59 * Construct the filter area UI component.
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62 * @param queryProcessor
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66 public FilterArea(final Composite parent, int style) {
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67 super(parent, style | SWT.BORDER);
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69 resourceManager = new LocalResourceManager(JFaceResources.getResources(parent.getDisplay()), this);
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71 // GridDataFactory.fillDefaults().grab(true, false).applyTo(this);
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72 // GridLayoutFactory.fillDefaults().applyTo(this);
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74 // filterText = new Text(this, SWT.BORDER | SWT.SEARCH | SWT.ICON_CANCEL);
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75 // filterText.setFont(resourceManager.createFont(FontDescriptor.createFrom(filterText.getFont()).increaseHeight(-1)));
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76 // filterText.setLayoutData(GridDataFactory.fillDefaults().grab(true, true).align(SWT.FILL, SWT.BEGINNING).create());
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78 GridDataFactory.fillDefaults().grab(true, false).span(2, 1).applyTo(this);
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79 GridLayoutFactory.fillDefaults().margins(0, 0).spacing(0, 0).numColumns(2).equalWidth(false).applyTo(this);
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81 createFilterText(this);
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82 createFilterCancelIcon(this);
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84 this.setBackground(filterText.getBackground());
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87 private void createFilterText(FilterArea filterArea) {
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88 //filterText = new Text(this, SWT.SINGLE | SWT.FLAT | SWT.SEARCH | SWT.ICON_CANCEL);
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89 filterText = new Text(this, SWT.SINGLE | SWT.ICON_CANCEL);
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90 GridDataFactory.fillDefaults().grab(true, false).applyTo(filterText);
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92 filterText.setFont(resourceManager.createFont(FontDescriptor.createFrom(filterText.getFont()).increaseHeight(-1)));
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94 // if we're using a field with built in cancel we need to listen for
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95 // default selection changes (which tell us the cancel button has been
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97 if ((filterText.getStyle() & SWT.ICON_CANCEL) != 0) {
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98 filterText.addSelectionListener(new SelectionAdapter() {
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100 public void widgetDefaultSelected(SelectionEvent e) {
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101 if (e.detail == SWT.ICON_CANCEL)
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107 GridData gridData = new GridData(SWT.FILL, SWT.CENTER, true, true);
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109 // if the text widget supported cancel then it will have it's own
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110 // integrated button. We can take all of the space.
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111 if ((filterText.getStyle() & SWT.ICON_CANCEL) != 0)
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112 gridData.horizontalSpan = 2;
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113 filterText.setLayoutData(gridData);
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116 private void createFilterCancelIcon(Composite parent) {
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117 // only create the button if the text widget doesn't support one
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119 if ((filterText.getStyle() & SWT.ICON_CANCEL) == 0) {
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120 final Image inactiveImage = WorkbenchImages.getImage(ISharedImages.IMG_ETOOL_CLEAR_DISABLED);
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121 final Image activeImage = WorkbenchImages.getImage(ISharedImages.IMG_ETOOL_CLEAR);
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122 final Image pressedImage = (Image) resourceManager.get( ImageDescriptor.createWithFlags( ImageDescriptor.createFromImage( activeImage ), SWT.IMAGE_GRAY ) );
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124 final Label clearButton= new Label(parent, SWT.NONE);
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125 clearButton.setLayoutData(new GridData(SWT.BEGINNING, SWT.CENTER, false, false));
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126 clearButton.setImage(inactiveImage);
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127 clearButton.setBackground(parent.getDisplay().getSystemColor(SWT.COLOR_LIST_BACKGROUND));
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128 clearButton.setToolTipText(WorkbenchMessages.FilteredTree_ClearToolTip);
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129 clearButton.addMouseListener(new MouseAdapter() {
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130 private MouseMoveListener fMoveListener;
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133 public void mouseDown(MouseEvent e) {
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134 clearButton.setImage(pressedImage);
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135 fMoveListener= new MouseMoveListener() {
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136 private boolean fMouseInButton= true;
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138 public void mouseMove(MouseEvent e) {
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139 boolean mouseInButton= isMouseInButton(e);
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140 if (mouseInButton != fMouseInButton) {
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141 fMouseInButton= mouseInButton;
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142 clearButton.setImage(mouseInButton ? pressedImage : inactiveImage);
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146 clearButton.addMouseMoveListener(fMoveListener);
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150 public void mouseUp(MouseEvent e) {
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151 if (fMoveListener != null) {
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152 clearButton.removeMouseMoveListener(fMoveListener);
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153 fMoveListener= null;
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154 boolean mouseInButton= isMouseInButton(e);
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155 clearButton.setImage(mouseInButton ? activeImage : inactiveImage);
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156 if (mouseInButton) {
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158 filterText.setFocus();
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163 private boolean isMouseInButton(MouseEvent e) {
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164 Point buttonSize = clearButton.getSize();
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165 return 0 <= e.x && e.x < buttonSize.x && 0 <= e.y && e.y < buttonSize.y;
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168 clearButton.addMouseTrackListener(new MouseTrackListener() {
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169 public void mouseEnter(MouseEvent e) {
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170 clearButton.setImage(activeImage);
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173 public void mouseExit(MouseEvent e) {
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174 clearButton.setImage(inactiveImage);
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177 public void mouseHover(MouseEvent e) {
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180 clearButton.getAccessible().addAccessibleListener(
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181 new AccessibleAdapter() {
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183 public void getName(AccessibleEvent e) {
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184 e.result= WorkbenchMessages.FilteredTree_AccessibleListenerClearButton;
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187 clearButton.getAccessible().addAccessibleControlListener(
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188 new AccessibleControlAdapter() {
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190 public void getRole(AccessibleControlEvent e) {
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191 e.detail= ACC.ROLE_PUSHBUTTON;
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194 this.clearButtonControl = clearButton;
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199 * Clears the text in the filter text widget.
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201 protected void clearText() {
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202 filterText.setText(""); //$NON-NLS-1$
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206 public Text getText() {
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210 public void focus() {
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211 if (filterText.isDisposed())
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213 Display d = filterText.getDisplay();
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214 if (d.getThread() == Thread.currentThread()) {
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217 d.asyncExec(new Runnable() {
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219 public void run() {
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220 if (filterText.isDisposed())
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228 protected void doSetFocus() {
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229 filterText.selectAll();
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230 filterText.setFocus();
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