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/*
* Copyright 2000-2012 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.execution.ExecutionException;
import com.intellij.execution.configurations.GeneralCommandLine;
import com.intellij.execution.util.ExecutionErrorDialog;
import com.intellij.openapi.Disposable;
import com.intellij.openapi.diff.*;
import com.intellij.openapi.editor.Document;
import com.intellij.openapi.fileEditor.FileDocumentManager;
import com.intellij.openapi.util.text.StringUtil;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.util.config.AbstractProperty;
import com.intellij.util.config.BooleanProperty;
import com.intellij.util.config.StringProperty;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.awt.*;
import java.util.ArrayList;
import java.util.List;
/**
* @author Konstantin Bulenkov
*/
abstract class BaseExternalTool implements DiffTool {
private final BooleanProperty myEnableProperty;
private final StringProperty myToolProperty;
protected BaseExternalTool(BooleanProperty enableProperty, StringProperty toolProperty) {
myEnableProperty = enableProperty;
myToolProperty = toolProperty;
}
public final boolean canShow(@NotNull DiffRequest request) {
if (!isEnabled() || StringUtil.isEmpty(getToolPath())) return false;
return isAvailable(request);
}
@Override
public DiffViewer createComponent(String title, DiffRequest request, Window window, @NotNull Disposable parentDisposable) {
return null;
}
public abstract boolean isAvailable(@NotNull DiffRequest request);
@Nullable
protected ContentExternalizer externalize(@NotNull DiffRequest request, final int index) {
final VirtualFile file = getLocalFile(request.getContents()[index].getFile());
if (LocalFileExternalizer.canExternalizeAsFile(file)) {
return LocalFileExternalizer.tryCreate(file);
}
return new ExternalToolContentExternalizer(request, index);
}
public static AbstractProperty.AbstractPropertyContainer getProperties() {
return DiffManagerImpl.getInstanceEx().getProperties();
}
protected String getToolPath() {
return myToolProperty.get(getProperties());
}
protected boolean isEnabled() {
return myEnableProperty.value(getProperties());
}
@NotNull
protected List<String> getParameters(@NotNull DiffRequest request) throws Exception {
final String p1 = convertToPath(request, 0);
final String p2 = convertToPath(request, 1);
final List<String> params = new ArrayList<String>();
if (p1 != null) params.add(p1);
if (p2 != null) params.add(p2);
return params;
}
public void show(DiffRequest request) {
saveContents(request);
GeneralCommandLine commandLine = new GeneralCommandLine();
commandLine.setExePath(getToolPath());
try {
commandLine.addParameters(getParameters(request));
commandLine.createProcess();
}
catch (Exception e) {
ExecutionErrorDialog.show(new ExecutionException(e.getMessage()),
DiffBundle.message("cant.launch.diff.tool.error.message"), request.getProject());
}
}
protected void saveContents(DiffRequest request) {
for (DiffContent diffContent : request.getContents()) {
Document document = diffContent.getDocument();
if (document != null) {
FileDocumentManager.getInstance().saveDocument(document);
}
}
}
@Nullable
protected String convertToPath(DiffRequest request, int index) throws Exception {
final ContentExternalizer externalize = externalize(request, index);
return externalize == null ? null : externalize.getContentFile().getAbsolutePath();
}
@Nullable
protected static VirtualFile getLocalFile(VirtualFile file) {
if (file != null && file.isInLocalFileSystem()) return file;
return null;
}
}
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