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Java > Open Source Codes > org > eclipse > ant > internal > ui > editor > 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.ant.internal.ui.editor.actions;
12
13 import org.eclipse.ant.internal.ui.AntUIPlugin;
14 import org.eclipse.ant.internal.ui.debug.IAntDebugConstants;
15 import org.eclipse.ant.internal.ui.debug.model.AntLineBreakpoint;
16 import org.eclipse.core.resources.IFile;
17 import org.eclipse.core.resources.IResource;
18 import org.eclipse.core.runtime.CoreException;
19 import org.eclipse.debug.core.DebugPlugin;
20 import org.eclipse.debug.core.model.IBreakpoint;
21 import org.eclipse.jface.action.Action;
22 import org.eclipse.jface.text.BadLocationException;
23 import org.eclipse.jface.text.IDocument;
24 import org.eclipse.jface.text.Position;
25 import org.eclipse.jface.text.source.IAnnotationModel;
26 import org.eclipse.jface.text.source.IVerticalRulerInfo;
27 import org.eclipse.ui.IEditorInput;
28 import org.eclipse.ui.texteditor.AbstractMarkerAnnotationModel;
29 import org.eclipse.ui.texteditor.IDocumentProvider;
30 import org.eclipse.ui.texteditor.ITextEditor;
31 import org.eclipse.ui.texteditor.IUpdate;
32
33 public abstract class AbstractBreakpointRulerAction extends Action implements IUpdate {
34
35     private IVerticalRulerInfo fInfo;
36
37     private ITextEditor fTextEditor;
38
39     private IBreakpoint fBreakpoint;
40
41     protected IBreakpoint determineBreakpoint() {
42         IBreakpoint[] breakpoints= DebugPlugin.getDefault().getBreakpointManager().getBreakpoints(IAntDebugConstants.ID_ANT_DEBUG_MODEL);
43         for (int i= 0; i < breakpoints.length; i++) {
44             IBreakpoint breakpoint= breakpoints[i];
45             if (breakpoint instanceof AntLineBreakpoint) {
46                 AntLineBreakpoint antBreakpoint= (AntLineBreakpoint)breakpoint;
47                 try {
48                     if (breakpointAtRulerLine(antBreakpoint)) {
49                         return breakpoint;
50                     }
51                 } catch (CoreException ce) {
52                     AntUIPlugin.log(ce);
53                     continue;
54                 }
55             }
56         }
57         return null;
58     }
59
60     protected IVerticalRulerInfo getInfo() {
61         return fInfo;
62     }
63
64     protected void setInfo(IVerticalRulerInfo info) {
65         fInfo = info;
66     }
67
68     protected ITextEditor getTextEditor() {
69         return fTextEditor;
70     }
71
72     protected void setTextEditor(ITextEditor textEditor) {
73         fTextEditor = textEditor;
74     }
75
76     /**
77      * Returns the resource for which to create the marker,
78      * or <code>null</code> if there is no applicable resource.
79      *
80      * @return the resource for which to create the marker or <code>null</code>
81      */
82     protected IResource getResource() {
83         IEditorInput input= fTextEditor.getEditorInput();
84         IResource resource= (IResource) input.getAdapter(IFile.class);
85         if (resource == null) {
86             resource= (IResource) input.getAdapter(IResource.class);
87         }
88         return resource;
89     }
90
91     protected boolean breakpointAtRulerLine(AntLineBreakpoint antBreakpoint) throws CoreException {
92         AbstractMarkerAnnotationModel model = getAnnotationModel();
93         if (model != null) {
94             Position position= model.getMarkerPosition(antBreakpoint.getMarker());
95             if (position != null) {
96                 IDocumentProvider provider= getTextEditor().getDocumentProvider();
97                 IDocument doc= provider.getDocument(getTextEditor().getEditorInput());
98                 try {
99                     int markerLineNumber= doc.getLineOfOffset(position.getOffset());
100                     int rulerLine= getInfo().getLineOfLastMouseButtonActivity();
101                     if (rulerLine == markerLineNumber) {
102                         if (getTextEditor().isDirty()) {
103                             return antBreakpoint.getLineNumber() == markerLineNumber + 1;
104                         }
105                         return true;
106                     }
107                 } catch (BadLocationException x) {
108                 }
109             }
110         }
111         
112         return false;
113     }
114         
115     protected IBreakpoint getBreakpoint() {
116         return fBreakpoint;
117     }
118
119     protected void setBreakpoint(IBreakpoint breakpoint) {
120         fBreakpoint = breakpoint;
121     }
122     
123     /**
124      * Returns the <code>AbstractMarkerAnnotationModel</code> of the editor's input.
125      *
126      * @return the marker annotation model
127      */
128     protected AbstractMarkerAnnotationModel getAnnotationModel() {
129         IDocumentProvider provider= fTextEditor.getDocumentProvider();
130         IAnnotationModel model= provider.getAnnotationModel(getTextEditor().getEditorInput());
131         if (model instanceof AbstractMarkerAnnotationModel) {
132             return (AbstractMarkerAnnotationModel) model;
133         }
134         return null;
135     }
136 }
137
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