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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2006 IBM Corporation and others.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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7 *
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8 * Contributors:
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9 * IBM Corporation - initial API and implementation
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10 * Port to the D programming language:
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11 * Frank Benoit <benoit@tionex.de>
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12 *******************************************************************************/
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13 module dwtx.jface.text.contentassist.ContentAssistSubjectControlAdapter;
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14
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15 import dwt.dwthelper.utils;
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16
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17
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18
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19
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20
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21 import dwt.custom.StyledText;
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22 import dwt.custom.VerifyKeyListener;
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23 import dwt.events.KeyListener;
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24 import dwt.events.SelectionListener;
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25 import dwt.graphics.Point;
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26 import dwt.widgets.Control;
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27 import dwtx.core.runtime.Assert;
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28 import dwtx.jface.contentassist.IContentAssistSubjectControl;
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29 import dwtx.jface.contentassist.ISubjectControlContextInformationPresenter;
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30 import dwtx.jface.contentassist.ISubjectControlContextInformationValidator;
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31 import dwtx.jface.text.IDocument;
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32 import dwtx.jface.text.IEventConsumer;
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33 import dwtx.jface.text.ITextViewer;
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34 import dwtx.jface.text.ITextViewerExtension;
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35 import dwtx.jface.text.contentassist.ContextInformationPopup.ContextFrame;
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36
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37
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38 /**
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39 * This content assist adapter delegates the calls either to
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40 * a text viewer or to a content assist subject control.
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41 *
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42 * @since 3.0
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43 */
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44 final class ContentAssistSubjectControlAdapter : IContentAssistSubjectControl {
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45
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46 /**
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47 * The text viewer which is used as content assist subject control.
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48 */
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49 private ITextViewer fViewer;
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50
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51 /**
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52 * The content assist subject control.
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53 */
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54 private IContentAssistSubjectControl fContentAssistSubjectControl;
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55
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56
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57 /**
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58 * Creates an adapter for the given content assist subject control.
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59 *
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60 * @param contentAssistSubjectControl the content assist subject control
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61 */
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62 ContentAssistSubjectControlAdapter(IContentAssistSubjectControl contentAssistSubjectControl) {
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63 Assert.isNotNull(contentAssistSubjectControl);
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64 fContentAssistSubjectControl= contentAssistSubjectControl;
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65 }
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66
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67 /**
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68 * Creates an adapter for the given text viewer.
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69 *
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70 * @param viewer the text viewer
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71 */
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72 public ContentAssistSubjectControlAdapter(ITextViewer viewer) {
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73 Assert.isNotNull(viewer);
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74 fViewer= viewer;
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75 }
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76
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77 /*
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78 * @see IContentAssistSubjectControl#getLineHeight()
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79 */
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80 public int getLineHeight() {
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81 if (fContentAssistSubjectControl !is null)
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82 return fContentAssistSubjectControl.getLineHeight();
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83
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84 return fViewer.getTextWidget().getLineHeight(getCaretOffset());
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85 }
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86
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87 /*
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88 * @see IContentAssistSubjectControl#getControl()
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89 */
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90 public Control getControl() {
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91 if (fContentAssistSubjectControl !is null)
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92 return fContentAssistSubjectControl.getControl();
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93 return fViewer.getTextWidget();
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94 }
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95
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96 /*
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97 * @see IContentAssistSubjectControl#getLocationAtOffset(int)
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98 */
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99 public Point getLocationAtOffset(int offset) {
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100 if (fContentAssistSubjectControl !is null)
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101 return fContentAssistSubjectControl.getLocationAtOffset(offset);
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102 return fViewer.getTextWidget().getLocationAtOffset(offset);
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103 }
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104
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105 /*
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106 * @see IContentAssistSubjectControl#getWidgetSelectionRange()
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107 */
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108 public Point getWidgetSelectionRange() {
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109 if (fContentAssistSubjectControl !is null)
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110 return fContentAssistSubjectControl.getWidgetSelectionRange();
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111 return fViewer.getTextWidget().getSelectionRange();
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112 }
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113
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114 /*
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115 * @see IContentAssistSubjectControl#getSelectedRange()
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116 */
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117 public Point getSelectedRange() {
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118 if (fContentAssistSubjectControl !is null)
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119 return fContentAssistSubjectControl.getSelectedRange();
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120 return fViewer.getSelectedRange();
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121 }
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122
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123 /*
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124 * @see dwtx.jface.text.contentassist.IContentAssistSubjectControl#getCaretOffset()
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125 */
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126 public int getCaretOffset() {
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127 if (fContentAssistSubjectControl !is null)
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128 return fContentAssistSubjectControl.getCaretOffset();
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129 return fViewer.getTextWidget().getCaretOffset();
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130 }
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131
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132 /*
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133 * @see dwtx.jface.text.contentassist.IContentAssistSubjectControl#getLineDelimiter()
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134 */
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135 public String getLineDelimiter() {
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136 if (fContentAssistSubjectControl !is null)
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137 return fContentAssistSubjectControl.getLineDelimiter();
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138 return fViewer.getTextWidget().getLineDelimiter();
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139 }
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140
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141 /*
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142 * @see dwtx.jface.text.contentassist.IContentAssistSubjectControl#addKeyListener(dwt.events.KeyListener)
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143 */
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144 public void addKeyListener(KeyListener keyListener) {
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145 if (fContentAssistSubjectControl !is null)
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146 fContentAssistSubjectControl.addKeyListener(keyListener);
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147 else
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148 fViewer.getTextWidget().addKeyListener(keyListener);
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149 }
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150
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151 /*
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152 * @see dwtx.jface.text.contentassist.IContentAssistSubjectControl#removeKeyListener(dwt.events.KeyListener)
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153 */
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154 public void removeKeyListener(KeyListener keyListener) {
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155 if (fContentAssistSubjectControl !is null)
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156 fContentAssistSubjectControl.removeKeyListener(keyListener);
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157 else
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158 fViewer.getTextWidget().removeKeyListener(keyListener);
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159 }
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160
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161 /*
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162 * @see dwtx.jface.text.contentassist.IContentAssistSubjectControl#getDocument()
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163 */
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164 public IDocument getDocument() {
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165 if (fContentAssistSubjectControl !is null)
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166 return fContentAssistSubjectControl.getDocument();
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167 return fViewer.getDocument();
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168 }
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169
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170 /*
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171 * @see dwtx.jface.text.contentassist.IContentAssistSubjectControl#prependVerifyKeyListener(VerifyKeyListener)
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172 */
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173 public bool prependVerifyKeyListener(VerifyKeyListener verifyKeyListener) {
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174 if (fContentAssistSubjectControl !is null) {
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175 return fContentAssistSubjectControl.prependVerifyKeyListener(verifyKeyListener);
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176 } else if (fViewer instanceof ITextViewerExtension) {
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177 ITextViewerExtension e= (ITextViewerExtension) fViewer;
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178 e.prependVerifyKeyListener(verifyKeyListener);
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179 return true;
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180 } else {
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181
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182 StyledText textWidget= fViewer.getTextWidget();
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183 if (Helper.okToUse(textWidget)) {
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184 textWidget.addVerifyKeyListener(verifyKeyListener);
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185 return true;
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186 }
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187 }
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188 return false;
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189 }
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190
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191 /*
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192 * @see dwtx.jface.text.contentassist.IContentAssistSubjectControl#appendVerifyKeyListener(dwt.custom.VerifyKeyListener)
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193 */
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194 public bool appendVerifyKeyListener(VerifyKeyListener verifyKeyListener) {
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195 if (fContentAssistSubjectControl !is null)
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196 return fContentAssistSubjectControl.appendVerifyKeyListener(verifyKeyListener);
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197 else if (fViewer instanceof ITextViewerExtension) {
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198 ITextViewerExtension extension= (ITextViewerExtension)fViewer;
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199 extension.appendVerifyKeyListener(verifyKeyListener);
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200 return true;
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201 } else {
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202 StyledText textWidget= fViewer.getTextWidget();
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203 if (Helper.okToUse(textWidget)) {
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204 textWidget.addVerifyKeyListener(verifyKeyListener);
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205 return true;
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206 }
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207 }
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208 return false;
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209 }
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210
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211 /*
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212 * @see dwtx.jface.text.contentassist.IContentAssistSubjectControl#removeVerifyKeyListener(dwt.custom.VerifyKeyListener)
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213 */
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214 public void removeVerifyKeyListener(VerifyKeyListener verifyKeyListener) {
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215 if (fContentAssistSubjectControl !is null) {
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216 fContentAssistSubjectControl.removeVerifyKeyListener(verifyKeyListener);
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217 } else if (fViewer instanceof ITextViewerExtension) {
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218 ITextViewerExtension extension= (ITextViewerExtension) fViewer;
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219 extension.removeVerifyKeyListener(verifyKeyListener);
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220 } else {
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221 StyledText textWidget= fViewer.getTextWidget();
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222 if (Helper.okToUse(textWidget))
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223 textWidget.removeVerifyKeyListener(verifyKeyListener);
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224 }
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225 }
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226
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227 /*
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228 * @see dwtx.jface.text.contentassist.IContentAssistSubjectControl#setEventConsumer(dwtx.jface.text.contentassist.ContentAssistant.InternalListener)
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229 */
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230 public void setEventConsumer(IEventConsumer eventConsumer) {
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231 if (fContentAssistSubjectControl !is null)
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232 fContentAssistSubjectControl.setEventConsumer(eventConsumer);
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233 else
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234 fViewer.setEventConsumer(eventConsumer);
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235 }
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236
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237 /*
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238 * @see dwtx.jface.text.contentassist.IContentAssistSubjectControl#setSelectedRange(int, int)
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239 */
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240 public void setSelectedRange(int i, int j) {
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241 if (fContentAssistSubjectControl !is null)
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242 fContentAssistSubjectControl.setSelectedRange(i, j);
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243 else
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244 fViewer.setSelectedRange(i, j);
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245 }
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246
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247 /*
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248 * @see dwtx.jface.text.contentassist.IContentAssistSubjectControl#revealRange(int, int)
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249 */
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250 public void revealRange(int i, int j) {
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251 if (fContentAssistSubjectControl !is null)
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252 fContentAssistSubjectControl.revealRange(i, j);
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253 else
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254 fViewer.revealRange(i, j);
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255 }
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256
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257 /*
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258 * @see dwtx.jface.text.contentassist.IContentAssistSubjectControl#canAddVerifyKeyListener()
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259 */
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260 public bool supportsVerifyKeyListener() {
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261 if (fContentAssistSubjectControl !is null)
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262 return fContentAssistSubjectControl.supportsVerifyKeyListener();
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263 return true;
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264 }
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265 /**
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266 * Returns the characters which when typed by the user should automatically
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267 * initiate proposing completions. The position is used to determine the
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268 * appropriate content assist processor to invoke.
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269 *
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270 * @param contentAssistant the content assistant
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271 * @param offset a document offset
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272 * @return the auto activation characters
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273 * @see IContentAssistProcessor#getCompletionProposalAutoActivationCharacters()
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274 */
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275 public char[] getCompletionProposalAutoActivationCharacters(ContentAssistant contentAssistant, int offset) {
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276 if (fContentAssistSubjectControl !is null)
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277 return contentAssistant.getCompletionProposalAutoActivationCharacters(fContentAssistSubjectControl, offset);
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278 return contentAssistant.getCompletionProposalAutoActivationCharacters(fViewer, offset);
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279 }
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280
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281 /**
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282 * Returns the characters which when typed by the user should automatically
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283 * initiate the presentation of context information. The position is used
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284 * to determine the appropriate content assist processor to invoke.
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285 *
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286 * @param contentAssistant the content assistant
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287 * @param offset a document offset
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288 * @return the auto activation characters
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289 *
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290 * @see IContentAssistProcessor#getContextInformationAutoActivationCharacters()
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291 */
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292 char[] getContextInformationAutoActivationCharacters(ContentAssistant contentAssistant, int offset) {
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293 if (fContentAssistSubjectControl !is null)
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294 return contentAssistant.getContextInformationAutoActivationCharacters(fContentAssistSubjectControl, offset);
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295 return contentAssistant.getContextInformationAutoActivationCharacters(fViewer, offset);
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296 }
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297
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298 /**
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299 * Creates and returns a completion proposal popup for the given content assistant.
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300 *
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301 * @param contentAssistant the content assistant
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302 * @param controller the additional info controller
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303 * @return the completion proposal popup
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304 */
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305 CompletionProposalPopup createCompletionProposalPopup(ContentAssistant contentAssistant, AdditionalInfoController controller) {
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306 if (fContentAssistSubjectControl !is null)
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307 return new CompletionProposalPopup(contentAssistant, fContentAssistSubjectControl, controller);
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308 return new CompletionProposalPopup(contentAssistant, fViewer, controller);
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309
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310 }
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311
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312 /**
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313 * Creates and returns a context info popup for the given content assistant.
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314 *
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315 * @param contentAssistant the content assistant
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316 * @return the context info popup or <code>null</code>
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317 */
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318 ContextInformationPopup createContextInfoPopup(ContentAssistant contentAssistant) {
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319 if (fContentAssistSubjectControl !is null)
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320 return new ContextInformationPopup(contentAssistant, fContentAssistSubjectControl);
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321 return new ContextInformationPopup(contentAssistant, fViewer);
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322
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323 }
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324
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325 /**
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326 * Returns the context information validator that should be used to
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327 * determine when the currently displayed context information should
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328 * be dismissed. The position is used to determine the appropriate
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329 * content assist processor to invoke.
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330 *
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331 * @param contentAssistant the content assistant
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332 * @param offset a document offset
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333 * @return an validator
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334 */
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335 public IContextInformationValidator getContextInformationValidator(ContentAssistant contentAssistant, int offset) {
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336 if (fContentAssistSubjectControl !is null)
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337 return contentAssistant.getContextInformationValidator(fContentAssistSubjectControl, offset);
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338 return contentAssistant.getContextInformationValidator(fViewer, offset);
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339 }
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340
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341 /**
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342 * Returns the context information presenter that should be used to
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343 * display context information. The position is used to determine the
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344 * appropriate content assist processor to invoke.
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345 *
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346 * @param contentAssistant the content assistant
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347 * @param offset a document offset
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348 * @return a presenter
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349 */
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350 public IContextInformationPresenter getContextInformationPresenter(ContentAssistant contentAssistant, int offset) {
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351 if (fContentAssistSubjectControl !is null)
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352 return contentAssistant.getContextInformationPresenter(fContentAssistSubjectControl, offset);
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353 return contentAssistant.getContextInformationPresenter(fViewer, offset);
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354 }
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355
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356 /**
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357 * Installs this adapter's information validator on the given context frame.
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358 *
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359 * @param frame the context frame
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360 */
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361 public void installValidator(ContextFrame frame) {
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362 if (fContentAssistSubjectControl !is null) {
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363 if (frame.fValidator instanceof ISubjectControlContextInformationValidator)
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364 ((ISubjectControlContextInformationValidator)frame.fValidator).install(frame.fInformation, fContentAssistSubjectControl, frame.fOffset);
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365 } else
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366 frame.fValidator.install(frame.fInformation, fViewer, frame.fOffset);
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367 }
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368
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369 /**
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370 * Installs this adapter's information presenter on the given context frame.
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371 *
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372 * @param frame the context frame
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373 */
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374 public void installContextInformationPresenter(ContextFrame frame) {
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375 if (fContentAssistSubjectControl !is null) {
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376 if (frame.fPresenter instanceof ISubjectControlContextInformationPresenter)
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377 ((ISubjectControlContextInformationPresenter)frame.fValidator).install(frame.fInformation, fContentAssistSubjectControl, frame.fBeginOffset);
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378 } else
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379 frame.fPresenter.install(frame.fInformation, fViewer, frame.fBeginOffset);
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380 }
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381
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382 /**
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383 * Returns an array of context information objects computed based
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384 * on the specified document position. The position is used to determine
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385 * the appropriate content assist processor to invoke.
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386 *
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387 * @param contentAssistant the content assistant
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388 * @param offset a document offset
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389 * @return an array of context information objects
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390 * @see IContentAssistProcessor#computeContextInformation(ITextViewer, int)
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391 */
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392 public IContextInformation[] computeContextInformation(ContentAssistant contentAssistant, int offset) {
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393 if (fContentAssistSubjectControl !is null)
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394 return contentAssistant.computeContextInformation(fContentAssistSubjectControl, offset);
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395 return contentAssistant.computeContextInformation(fViewer, offset);
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396 }
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397
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398 /*
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399 * @see IContentAssistSubjectControl#addSelectionListener(SelectionListener)
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400 */
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401 public bool addSelectionListener(SelectionListener selectionListener) {
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402 if (fContentAssistSubjectControl !is null)
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403 return fContentAssistSubjectControl.addSelectionListener(selectionListener);
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404 fViewer.getTextWidget().addSelectionListener(selectionListener);
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405 return true;
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406 }
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407
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408 /*
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409 * @see IContentAssistSubjectControl#removeSelectionListener(SelectionListener)
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410 */
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411 public void removeSelectionListener(SelectionListener selectionListener) {
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412 if (fContentAssistSubjectControl !is null)
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413 fContentAssistSubjectControl.removeSelectionListener(selectionListener);
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414 else
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415 fViewer.getTextWidget().removeSelectionListener(selectionListener);
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416 }
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417 }
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