/*
* Copyright 2000-2014 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.settings;
import com.intellij.application.options.colors.ColorAndFontSettingsListener;
import com.intellij.application.options.colors.PreviewPanel;
import com.intellij.openapi.Disposable;
import com.intellij.openapi.diff.DiffBundle;
import com.intellij.openapi.diff.DiffContent;
import com.intellij.openapi.diff.DiffRequest;
import com.intellij.openapi.diff.SimpleContent;
import com.intellij.openapi.diff.impl.incrementalMerge.Change;
import com.intellij.openapi.diff.impl.incrementalMerge.MergeList;
import com.intellij.openapi.diff.impl.incrementalMerge.MergeSearchHelper;
import com.intellij.openapi.diff.impl.incrementalMerge.ui.EditorPlace;
import com.intellij.openapi.diff.impl.incrementalMerge.ui.MergePanel2;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.editor.colors.EditorColorsScheme;
import com.intellij.openapi.editor.event.*;
import com.intellij.openapi.editor.ex.util.EditorUtil;
import com.intellij.openapi.fileTypes.PlainTextFileType;
import com.intellij.openapi.project.Project;
import com.intellij.util.EventDispatcher;
import com.intellij.util.diff.FilesTooBigForDiffException;
import org.jetbrains.annotations.NonNls;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import javax.swing.*;
import java.awt.*;
/**
* The panel from the Settings, that allows to see changes to diff/merge coloring scheme right away.
*/
public class DiffPreviewPanel implements PreviewPanel {
//TODO [VISTALL] review text
@NonNls
private static final String LEFT_TEXT = "class MyClass {\n" +
" int value;\n" +
"\n" +
" void leftOnly() {}\n" +
"\n" +
" void foo() {\n" +
" // Left changes\n" +
" }\n" +
"}";
@NonNls
private static final String CENTER_TEXT = "class MyClass {\n" +
" int value;\n" +
"\n" +
" void foo() {\n" +
" }\n" +
"\n" +
" void removedFromLeft() {}\n" +
"}";
@NonNls
private static final String RIGHT_TEXT = "class MyClass {\n" +
" long value;\n" +
"\n" +
" void foo() {\n" +
" // Right changes\n" +
" }\n" +
"\n" +
" void removedFromLeft() {}\n" +
"}";
private final MergePanel2.AsComponent myMergePanelComponent;
private final JPanel myPanel = new JPanel(new BorderLayout());
private final EventDispatcher<ColorAndFontSettingsListener> myDispatcher = EventDispatcher.create(ColorAndFontSettingsListener.class);
public DiffPreviewPanel(@NotNull Disposable parent) {
myMergePanelComponent = new MergePanel2.AsComponent(parent);
myPanel.add(myMergePanelComponent, BorderLayout.CENTER);
myMergePanelComponent.setToolbarEnabled(false);
MergePanel2 mergePanel = getMergePanel();
mergePanel.setScrollToFirstDiff(false);
for (int i = 0; i < MergePanel2.EDITORS_COUNT; i++) {
final EditorMouseListener motionListener = new EditorMouseListener(i);
final EditorClickListener clickListener = new EditorClickListener(i);
mergePanel.getEditorPlace(i).addListener(new EditorPlace.EditorListener() {
@Override
public void onEditorCreated(EditorPlace place) {
Editor editor = place.getEditor();
editor.addEditorMouseMotionListener(motionListener);
editor.addEditorMouseListener(clickListener);
editor.getCaretModel().addCaretListener(clickListener);
}
@Override
public void onEditorReleased(Editor releasedEditor) {
releasedEditor.removeEditorMouseMotionListener(motionListener);
releasedEditor.removeEditorMouseListener(clickListener);
}
});
Editor editor = mergePanel.getEditor(i);
if (editor != null) {
editor.addEditorMouseMotionListener(motionListener);
editor.addEditorMouseListener(clickListener);
}
}
}
@Override
public Component getPanel() {
return myPanel;
}
@Override
public void updateView() {
MergeList mergeList = getMergePanel().getMergeList();
if (mergeList != null) mergeList.updateMarkup();
myMergePanelComponent.repaint();
}
public void setMergeRequest(@Nullable Project project) throws FilesTooBigForDiffException {
getMergePanel().setDiffRequest(new SampleMerge(project));
}
private MergePanel2 getMergePanel() {
return myMergePanelComponent.getMergePanel();
}
public void setColorScheme(final EditorColorsScheme highlighterSettings) {
getMergePanel().setColorScheme(highlighterSettings);
getMergePanel().setHighlighterSettings(highlighterSettings);
}
private class EditorMouseListener extends EditorMouseMotionAdapter {
private final int myIndex;
private EditorMouseListener(int index) {
myIndex = index;
}
@Override
public void mouseMoved(EditorMouseEvent e) {
MergePanel2 mergePanel = getMergePanel();
Editor editor = mergePanel.getEditor(myIndex);
if (MergeSearchHelper.findChangeAt(e, mergePanel, myIndex) != null) EditorUtil.setHandCursor(editor);
}
}
public static class SampleMerge extends DiffRequest {
public SampleMerge(@Nullable Project project) {
super(project);
}
@Override
@NotNull
public DiffContent[] getContents() {
return new DiffContent[]{
new SimpleContent(LEFT_TEXT, PlainTextFileType.INSTANCE),
new SimpleContent(CENTER_TEXT, PlainTextFileType.INSTANCE),
new SimpleContent(RIGHT_TEXT, PlainTextFileType.INSTANCE)
};
}
@Override
public String[] getContentTitles() {
return new String[]{"", "", ""};
}
@Override
public String getWindowTitle() {
return DiffBundle.message("merge.color.options.dialog.title");
}
}
@Override
public void addListener(@NotNull final ColorAndFontSettingsListener listener) {
myDispatcher.addListener(listener);
}
private class EditorClickListener extends EditorMouseAdapter implements CaretListener {
private final int myIndex;
private EditorClickListener(int i) {
myIndex = i;
}
@Override
public void mouseClicked(EditorMouseEvent e) {
select(MergeSearchHelper.findChangeAt(e, getMergePanel(), myIndex));
}
private void select(Change change) {
if (change == null) return;
myDispatcher.getMulticaster().selectionInPreviewChanged(change.getType().getTextDiffType().getDisplayName());
}
@Override
public void caretPositionChanged(CaretEvent e) {
select(MergeSearchHelper.findChangeAt(e, getMergePanel(), myIndex));
}
@Override
public void caretAdded(CaretEvent e) {
}
@Override
public void caretRemoved(CaretEvent e) {
}
}
@Override
public void blinkSelectedHighlightType(final Object selected) {
}
@Override
public void disposeUIResources() {
}
}