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Java > Open Source Codes > org > eclipse > jdt > internal > debug > ui > actions > AbstractBreakpointRulerAction


1 /*******************************************************************************
2  * Copyright (c) 2000, 2005 IBM Corporation and others.
3  * All rights reserved. This program and the accompanying materials
4  * are made available under the terms of the Eclipse Public License v1.0
5  * which accompanies this distribution, and is available at
6  * http://www.eclipse.org/legal/epl-v10.html
7  *
8  * Contributors:
9  * IBM Corporation - initial API and implementation
10  *******************************************************************************/
11 package org.eclipse.jdt.internal.debug.ui.actions;
12
13
14 import org.eclipse.core.resources.IFile;
15 import org.eclipse.core.resources.IResource;
16 import org.eclipse.core.runtime.CoreException;
17 import org.eclipse.debug.core.DebugPlugin;
18 import org.eclipse.debug.core.model.IBreakpoint;
19 import org.eclipse.jdt.debug.core.IJavaLineBreakpoint;
20 import org.eclipse.jdt.internal.debug.core.JDIDebugPlugin;
21 import org.eclipse.jdt.internal.debug.ui.JDIDebugUIPlugin;
22 import org.eclipse.jface.action.Action;
23 import org.eclipse.jface.text.BadLocationException;
24 import org.eclipse.jface.text.IDocument;
25 import org.eclipse.jface.text.Position;
26 import org.eclipse.jface.text.source.IAnnotationModel;
27 import org.eclipse.jface.text.source.IVerticalRulerInfo;
28 import org.eclipse.ui.IEditorInput;
29 import org.eclipse.ui.texteditor.AbstractMarkerAnnotationModel;
30 import org.eclipse.ui.texteditor.IDocumentProvider;
31 import org.eclipse.ui.texteditor.ITextEditor;
32 import org.eclipse.ui.texteditor.IUpdate;
33
34 public abstract class AbstractBreakpointRulerAction extends Action implements IUpdate {
35
36     private IVerticalRulerInfo fInfo;
37
38     private ITextEditor fTextEditor;
39
40     private IBreakpoint fBreakpoint;
41
42     protected IBreakpoint determineBreakpoint() {
43         IBreakpoint[] breakpoints= DebugPlugin.getDefault().getBreakpointManager().getBreakpoints(JDIDebugPlugin.getUniqueIdentifier());
44         for (int i= 0; i < breakpoints.length; i++) {
45             IBreakpoint breakpoint= breakpoints[i];
46             if (breakpoint instanceof IJavaLineBreakpoint) {
47                 IJavaLineBreakpoint jBreakpoint= (IJavaLineBreakpoint)breakpoint;
48                 try {
49                     if (breakpointAtRulerLine(jBreakpoint)) {
50                         return jBreakpoint;
51                     }
52                 } catch (CoreException ce) {
53                     JDIDebugUIPlugin.log(ce);
54                     continue;
55                 }
56             }
57         }
58         return null;
59     }
60
61     protected IVerticalRulerInfo getInfo() {
62         return fInfo;
63     }
64
65     protected void setInfo(IVerticalRulerInfo info) {
66         fInfo = info;
67     }
68
69     protected ITextEditor getTextEditor() {
70         return fTextEditor;
71     }
72
73     protected void setTextEditor(ITextEditor textEditor) {
74         fTextEditor = textEditor;
75     }
76
77     /**
78      * Returns the resource for which to create the marker,
79      * or <code>null</code> if there is no applicable resource.
80      *
81      * @return the resource for which to create the marker or <code>null</code>
82      */
83     protected IResource getResource() {
84         IEditorInput input= fTextEditor.getEditorInput();
85         IResource resource= (IResource) input.getAdapter(IFile.class);
86         if (resource == null) {
87             resource= (IResource) input.getAdapter(IResource.class);
88         }
89         return resource;
90     }
91
92     protected boolean breakpointAtRulerLine(IJavaLineBreakpoint jBreakpoint) throws CoreException {
93         AbstractMarkerAnnotationModel model = getAnnotationModel();
94         if (model != null) {
95             Position position= model.getMarkerPosition(jBreakpoint.getMarker());
96             if (position != null) {
97                 IDocumentProvider provider= getTextEditor().getDocumentProvider();
98                 IDocument doc= provider.getDocument(getTextEditor().getEditorInput());
99                 try {
100                     int markerLineNumber= doc.getLineOfOffset(position.getOffset());
101                     int rulerLine= getInfo().getLineOfLastMouseButtonActivity();
102                     if (rulerLine == markerLineNumber) {
103                         if (getTextEditor().isDirty()) {
104                             return jBreakpoint.getLineNumber() == markerLineNumber + 1;
105                         }
106                         return true;
107                     }
108                 } catch (BadLocationException x) {
109                 }
110             }
111         }
112         
113         return false;
114     }
115         
116     protected IBreakpoint getBreakpoint() {
117         return fBreakpoint;
118     }
119
120     protected void setBreakpoint(IBreakpoint breakpoint) {
121         fBreakpoint = breakpoint;
122     }
123     
124     /**
125      * Returns the <code>AbstractMarkerAnnotationModel</code> of the editor's input.
126      *
127      * @return the marker annotation model
128      */
129     protected AbstractMarkerAnnotationModel getAnnotationModel() {
130         IDocumentProvider provider= fTextEditor.getDocumentProvider();
131         IAnnotationModel model= provider.getAnnotationModel(getTextEditor().getEditorInput());
132         if (model instanceof AbstractMarkerAnnotationModel) {
133             return (AbstractMarkerAnnotationModel) model;
134         }
135         return null;
136     }
137 }
138
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