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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.external;
import com.intellij.ide.diff.DiffElement;
import com.intellij.openapi.Disposable;
import com.intellij.openapi.diagnostic.Logger;
import com.intellij.openapi.diff.*;
import com.intellij.openapi.fileEditor.ex.FileEditorProviderManager;
import com.intellij.openapi.fileTypes.UIBasedFileType;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.ui.DialogWrapper;
import com.intellij.openapi.ui.Messages;
import com.intellij.openapi.vfs.VirtualFile;
import org.jetbrains.annotations.NotNull;
import javax.swing.*;
import java.awt.*;
import java.io.IOException;
import java.util.Arrays;
/**
* @author Konstantin Bulenkov
* @author max
*/
public class BinaryDiffTool implements DiffTool {
private static final Logger LOG = Logger.getInstance("#com.intellij.openapi.diff.impl.external.BinaryDiffTool");
public static final DiffTool INSTANCE = new BinaryDiffTool();
public void show(final DiffRequest data) {
final DiffContent current = data.getContents()[0];
final DiffContent upToDate = data.getContents()[1];
final Project project = data.getProject();
if ((current instanceof FileContent && upToDate instanceof FileContent)
|| (current.getContentType() instanceof UIBasedFileType && upToDate.getContentType() instanceof UIBasedFileType)) {
final VirtualFile src = current.getFile();
final VirtualFile trg = upToDate.getFile();
if (src != null && trg != null) {
final PanelCreator creator = new PanelCreator(data);
if (creator.isCanCreatePanel()) {
new DialogWrapper(data.getProject()) {
public DiffPanel myPanel;
{
setModal(false);
init();
}
@Override
protected String getDimensionServiceKey() {
return "BinaryDiffDialog";
}
@NotNull
@Override
protected Action[] createActions() {
final Action close = getCancelAction();
close.putValue(Action.NAME, "&Close");
return new Action[]{close};
}
@Override
protected JComponent createCenterPanel() {
myPanel = creator.create(getWindow(), getDisposable(), BinaryDiffTool.this);
return myPanel.getComponent();
}
}.show();
return;
} else {
final DirDiffManager diffManager = DirDiffManager.getInstance(project);
final DiffElement before = diffManager.createDiffElement(src);
final DiffElement after = diffManager.createDiffElement(trg);
if (before != null && after != null && diffManager.canShow(after, before)) {
diffManager.showDiff(before, after);
return;
}
}
}
}
try {
final boolean equal = Arrays.equals(current.getBytes(), upToDate.getBytes());
Messages.showMessageDialog(equal
? DiffBundle.message("binary.files.are.identical.message")
: DiffBundle.message("binary.files.are.different.message"),
equal
? DiffBundle.message("files.are.identical.dialog.title")
: DiffBundle.message("files.are.different.dialog.title"),
Messages.getInformationIcon());
} catch (IOException e) {
LOG.error(e);
}
}
private static class PanelCreator {
private boolean myCanCreatePanel;
private final DiffRequest myData;
private VirtualFile mySrc;
private VirtualFile myTrg;
private PanelCreator(final DiffRequest data) {
myData = data;
final DiffContent current = data.getContents()[0];
final DiffContent upToDate = data.getContents()[1];
final Project project = data.getProject();
mySrc = current.getFile();
myTrg = upToDate.getFile();
myCanCreatePanel = canShowContent(project, mySrc) && canShowContent(project, myTrg);
}
private boolean canShowContent(final Project project, final VirtualFile file) {
if (file == null) return true;
return FileEditorProviderManager.getInstance().getProviders(project, file).length > 0;
}
public boolean isCanCreatePanel() {
return myCanCreatePanel;
}
public DiffPanel create(final Window window, final Disposable disposable, final BinaryDiffTool tool) {
if (! myCanCreatePanel) return null;
final Project project = myData.getProject();
final DiffPanel panel = DiffManager.getInstance().createDiffPanel(window, project, disposable, tool);
panel.setDiffRequest(myData);
panel.removeStatusBar();
return panel;
}
}
public boolean canShow(final DiffRequest data) {
final DiffContent[] contents = data.getContents();
if (contents.length != 2) {
return false;
}
for (DiffContent content : contents) {
final VirtualFile file = content.getFile();
if (file == null) {
if (content.isEmpty()) continue;
return false;
}
if (file.isDirectory()) {
return false;
}
}
return true;
}
@Override
public DiffViewer createComponent(String title, DiffRequest request, Window window, @NotNull Disposable parentDisposable) {
final PanelCreator creator = new PanelCreator(request);
if (! creator.isCanCreatePanel()) return null;
return creator.create(window, parentDisposable, BinaryDiffTool.this);
}
public static boolean canShow(@NotNull Project project, VirtualFile file) {
if (file == null) return false;
if (FileEditorProviderManager.getInstance().getProviders(project, file).length > 0) return true;
final DirDiffManager diffManager = DirDiffManager.getInstance(project);
return diffManager.createDiffElement(file) != null;
}
}
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