net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/ui/text/java/hover/AbstractJavaEditorTextHover.java

   1 /*******************************************************************************
   2  * Copyright (c) 2000, 2003 IBM Corporation and others.
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the terms of the Common Public License v1.0
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/cpl-v10.html
   7  *
   8  * Contributors:
   9  *     IBM Corporation - initial API and implementation
  10  *******************************************************************************/
  11
  12 package net.sourceforge.phpdt.internal.ui.text.java.hover;
  13
  14 import java.util.List;
  15
  16 import net.sourceforge.phpdt.core.IJavaElement;
  17 import net.sourceforge.phpdt.internal.ui.text.HTMLTextPresenter;
  18 import net.sourceforge.phpdt.internal.ui.text.JavaWordFinder;
  19 import net.sourceforge.phpdt.ui.PreferenceConstants;
  20 import net.sourceforge.phpdt.ui.text.java.hover.IJavaEditorTextHover;
  21 import net.sourceforge.phpeclipse.PHPeclipsePlugin;
  22
  23 import org.eclipse.jface.text.DefaultInformationControl;
  24 import org.eclipse.jface.text.IInformationControl;
  25 import org.eclipse.jface.text.IInformationControlCreator;
  26 import org.eclipse.jface.text.IRegion;
  27 import org.eclipse.jface.text.ITextViewer;
  28 //import org.eclipse.swt.SWT;
  29 import org.eclipse.swt.widgets.Shell;
  30 import org.eclipse.ui.IEditorPart;
  31 //import org.eclipse.ui.PlatformUI;
  32 import org.eclipse.ui.commands.ICommand;
  33 //import org.eclipse.ui.commands.ICommandManager;
  34 import org.eclipse.ui.commands.IKeySequenceBinding;
  35 import org.eclipse.ui.keys.KeySequence;
  36 //import org.eclipse.jface.bindings.keys.KeySequence;
  37 /**
  38  * Abstract class for providing hover information for Java elements.
  39  *
  40  * @since 2.1
  41  */
  42 public abstract class AbstractJavaEditorTextHover implements
  43                 IJavaEditorTextHover {
  44
  45         private IEditorPart fEditor;
  46
  47         private ICommand fCommand;
  48         {
  49 //              ICommandManager commandManager = PlatformUI.getWorkbench()
  50 //                              .getCommandSupport().getCommandManager();
  51                 // fCommand=
  52                 // commandManager.getCommand(PHPEditorActionDefinitionIds.SHOW_JAVADOC);
  53                 // if (!fCommand.isDefined())
  54                 fCommand = null;
  55         }
  56
  57         /*
  58          * @see IJavaEditorTextHover#setEditor(IEditorPart)
  59          */
  60         public void setEditor(IEditorPart editor) {
  61                 fEditor = editor;
  62         }
  63
  64         protected IEditorPart getEditor() {
  65                 return fEditor;
  66         }
  67
  68         // protected ICodeAssist getCodeAssist() {
  69         // if (fEditor != null) {
  70         // IEditorInput input= fEditor.getEditorInput();
  71         // if (input instanceof IClassFileEditorInput) {
  72         // IClassFileEditorInput cfeInput= (IClassFileEditorInput) input;
  73         // return cfeInput.getClassFile();
  74         // }
  75         //
  76         // IWorkingCopyManager manager=
  77         // PHPeclipsePlugin.getDefault().getWorkingCopyManager();
  78         // return manager.getWorkingCopy(input);
  79         // }
  80         //
  81         // return null;
  82         // }
  83
  84         /*
  85          * @see ITextHover#getHoverRegion(ITextViewer, int)
  86          */
  87         public IRegion getHoverRegion(ITextViewer textViewer, int offset) {
  88                 return JavaWordFinder.findWord(textViewer.getDocument(), offset);
  89         }
  90
  91         /*
  92          * @see ITextHover#getHoverInfo(ITextViewer, IRegion)
  93          */
  94         public String getHoverInfo(ITextViewer textViewer, IRegion hoverRegion) {
  95
  96                 // ICodeAssist resolve= getCodeAssist();
  97                 // if (resolve != null) {
  98                 // try {
  99                 // IJavaElement[] result= null;
 100                 //
 101                 // synchronized (resolve) {
 102                 // result= resolve.codeSelect(hoverRegion.getOffset(),
 103                 // hoverRegion.getLength());
 104                 // }
 105                 //
 106                 // if (result == null)
 107                 // return null;
 108                 //
 109                 // int nResults= result.length;
 110                 // if (nResults == 0)
 111                 // return null;
 112                 //
 113                 // return getHoverInfo(result);
 114                 //
 115                 // } catch (JavaModelException x) {
 116                 // PHPeclipsePlugin.log(x.getStatus());
 117                 // }
 118                 // }
 119                 return null;
 120         }
 121
 122         /**
 123          * Provides hover information for the given Java elements.
 124          *
 125          * @return the hover information string
 126          * @since 2.1
 127          */
 128         protected String getHoverInfo(IJavaElement[] javaElements) {
 129                 return null;
 130         }
 131
 132         /*
 133          * @see ITextHoverExtension#getHoverControlCreator()
 134          * @since 3.0
 135          */
 136         public IInformationControlCreator getHoverControlCreator() {
 137                 return new IInformationControlCreator() {
 138                         public IInformationControl createInformationControl(Shell parent) {
 139                                 //incastrix
 140                                 //                              return new DefaultInformationControl(parent, SWT.NONE,
 141 //                                              new HTMLTextPresenter(true),
 142 //                                              getTooltipAffordanceString());
 143                                 return new DefaultInformationControl(parent, getTooltipAffordanceString(),
 144                                                 new HTMLTextPresenter(true));
 145                         }
 146                 };
 147         }
 148
 149         /**
 150          * Returns the tool tip affordance string.
 151          *
 152          * @return the affordance string or <code>null</code> if disabled or no
 153          *         key binding is defined
 154          * @since 3.0
 155          */
 156         protected String getTooltipAffordanceString() {
 157                 if (!PHPeclipsePlugin.getDefault().getPreferenceStore().getBoolean(
 158                                 PreferenceConstants.EDITOR_SHOW_TEXT_HOVER_AFFORDANCE))
 159                         return null;
 160
 161                 KeySequence[] sequences = getKeySequences();
 162                 if (sequences == null)
 163                         return null;
 164
 165                 String keySequence = sequences[0].format();
 166                 return JavaHoverMessages.getFormattedString(
 167                                 "JavaTextHover.makeStickyHint", keySequence); //$NON-NLS-1$
 168         }
 169
 170         /**
 171          * Returns the array of valid key sequence bindings for the show tool tip
 172          * description command.
 173          *
 174          * @return the array with the {@link KeySequence}s
 175          *
 176          * @since 3.0
 177          */
 178         private KeySequence[] getKeySequences() {
 179                 if (fCommand != null) {
 180                         List list = fCommand.getKeySequenceBindings();
 181                         if (!list.isEmpty()) {
 182                                 KeySequence[] keySequences = new KeySequence[list.size()];
 183                                 for (int i = 0; i < keySequences.length; i++) {
 184                                         keySequences[i] = ((IKeySequenceBinding) list.get(i))
 185                                                         .getKeySequence();
 186                                 }
 187                                 return keySequences;
 188                         }
 189                 }
 190                 return null;
 191         }
 192 }