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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.ide.actions;
import com.intellij.CommonBundle;
import com.intellij.icons.AllIcons;
import com.intellij.openapi.actionSystem.*;
import com.intellij.openapi.application.ApplicationInfo;
import com.intellij.openapi.help.HelpManager;
import com.intellij.openapi.project.DumbAware;
import org.jetbrains.annotations.NonNls;
import org.jetbrains.annotations.Nullable;
public class ContextHelpAction extends AnAction implements DumbAware {
private final String myHelpID;
public ContextHelpAction() {
this(null);
}
public ContextHelpAction(@NonNls @Nullable String helpID) {
myHelpID = helpID;
}
public void actionPerformed(AnActionEvent e) {
DataContext dataContext = e.getDataContext();
final String helpId = getHelpId(dataContext);
if (helpId != null) {
HelpManager.getInstance().invokeHelp(helpId);
}
}
@Nullable
protected String getHelpId(DataContext dataContext) {
return myHelpID != null ? myHelpID : PlatformDataKeys.HELP_ID.getData(dataContext);
}
public void update(AnActionEvent event){
Presentation presentation = event.getPresentation();
if (!ApplicationInfo.contextHelpAvailable()) {
presentation.setVisible(false);
return;
}
if (ActionPlaces.MAIN_MENU.equals(event.getPlace())) {
DataContext dataContext = event.getDataContext();
presentation.setEnabled(getHelpId(dataContext) != null);
}
else {
presentation.setIcon(AllIcons.Actions.Help);
presentation.setText(CommonBundle.getHelpButtonText());
}
}
}
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