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/*
* Copyright 2000-2009 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.intellij.openapi.diff.impl.highlighting;
import com.intellij.openapi.Disposable;
import com.intellij.openapi.application.ApplicationManager;
import com.intellij.openapi.diff.impl.ComparisonPolicy;
import com.intellij.openapi.diff.impl.ContentChangeListener;
import com.intellij.openapi.diff.impl.fragments.*;
import com.intellij.openapi.diff.impl.processing.DiffPolicy;
import com.intellij.openapi.diff.impl.processing.HighlightMode;
import com.intellij.openapi.diff.impl.processing.TextCompareProcessor;
import com.intellij.openapi.diff.impl.splitter.LineBlocks;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.util.Disposer;
import com.intellij.util.diff.FilesTooBigForDiffException;
import org.jetbrains.annotations.NotNull;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
public abstract class SimpleDiffPanelState implements Disposable {
protected ComparisonPolicy myComparisonPolicy = ComparisonPolicy.DEFAULT;
protected DiffPolicy myDiffPolicy;
protected HighlightMode myHighlightMode;
protected final EditorPlaceHolder myAppender1;
protected final EditorPlaceHolder myAppender2;
protected FragmentList myFragmentList = FragmentList.EMPTY;
protected final Project myProject;
public SimpleDiffPanelState(Project project, ContentChangeListener changeListener, @NotNull Disposable parentDisposable) {
myAppender1 = createEditorWrapper(project, changeListener, FragmentSide.SIDE1);
myAppender2 = createEditorWrapper(project, changeListener, FragmentSide.SIDE2);
myProject = project;
myDiffPolicy = DiffPolicy.LINES_WO_FORMATTING;
myHighlightMode = HighlightMode.BY_WORD;
Disposer.register(parentDisposable, this);
}
private EditorPlaceHolder createEditorWrapper(Project project, ContentChangeListener changeListener, FragmentSide side) {
EditorPlaceHolder editorWrapper = new EditorPlaceHolder(side, project, this);
editorWrapper.addListener(changeListener);
return editorWrapper;
}
public void setComparisonPolicy(ComparisonPolicy comparisonPolicy) {
myComparisonPolicy = comparisonPolicy;
}
public void setDiffPolicy(DiffPolicy diffPolicy) {
myDiffPolicy = diffPolicy;
}
public DiffPolicy getDiffPolicy() {
return myDiffPolicy;
}
public ComparisonPolicy getComparisonPolicy() {
return myComparisonPolicy;
}
public HighlightMode getHighlightMode() {
return myHighlightMode;
}
public void setHighlightMode(HighlightMode highlightMode) {
myHighlightMode = highlightMode;
}
public void dispose() {
}
private LineBlocks addMarkup(final List<LineFragment> lines) {
ApplicationManager.getApplication().runWriteAction(new Runnable() {
public void run() {
final FragmentHighlighterImpl fragmentHighlighter = new FragmentHighlighterImpl(myAppender1, myAppender2);
for (Iterator<LineFragment> iterator = lines.iterator(); iterator.hasNext();) {
LineFragment line = iterator.next();
fragmentHighlighter.setIsLast(!iterator.hasNext());
line.highlight(fragmentHighlighter);
}
}
});
ArrayList<LineFragment> allLineFragments = new ArrayList<LineFragment>();
for (LineFragment lineFragment : lines) {
allLineFragments.add(lineFragment);
lineFragment.addAllDescendantsTo(allLineFragments);
}
myFragmentList = FragmentListImpl.fromList(allLineFragments);
return LineBlocks.fromLineFragments(allLineFragments);
}
private void resetMarkup() {
ApplicationManager.getApplication().runWriteAction(new ResetMarkupRunnable(this));
}
public LineBlocks updateEditors() throws FilesTooBigForDiffException {
resetMarkup();
if (myAppender1.getEditor() == null || myAppender2.getEditor() == null) {
return LineBlocks.EMPTY;
}
return addMarkup(
new TextCompareProcessor(myComparisonPolicy, myDiffPolicy, myHighlightMode).process(myAppender1.getText(), myAppender2.getText()));
}
public Project getProject() { return myProject; }
public FragmentList getFragmentList() { return myFragmentList; }
private static class ResetMarkupRunnable implements Runnable {
private final SimpleDiffPanelState myState;
public ResetMarkupRunnable(SimpleDiffPanelState state) {
myState = state;
}
public void run() {
myState.myAppender1.resetHighlighters();
myState.myAppender2.resetHighlighters();
}
}
}
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