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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.usages;
import com.intellij.openapi.actionSystem.DataProvider;
import com.intellij.openapi.actionSystem.LangDataKeys;
import com.intellij.openapi.actionSystem.PlatformDataKeys;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.extensions.ExtensionPointName;
import com.intellij.openapi.extensions.Extensions;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiFile;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
public class UsageTargetUtil {
private static final ExtensionPointName<UsageTargetProvider> EP_NAME = ExtensionPointName.create("com.intellij.usageTargetProvider");
public static UsageTarget[] findUsageTargets(DataProvider dataProvider) {
Editor editor = PlatformDataKeys.EDITOR.getData(dataProvider);
PsiFile file = LangDataKeys.PSI_FILE.getData(dataProvider);
List<UsageTarget> result = new ArrayList<UsageTarget>();
if (file != null && editor != null) {
UsageTarget[] targets = findUsageTargets(editor, file);
if (targets != null) Collections.addAll(result, targets);
}
PsiElement psiElement = LangDataKeys.PSI_ELEMENT.getData(dataProvider);
if (psiElement != null) {
UsageTarget[] targets = findUsageTargets(psiElement);
if (targets != null)Collections.addAll(result, targets);
}
return result.isEmpty() ? null : result.toArray(new UsageTarget[result.size()]);
}
public static UsageTarget[] findUsageTargets(Editor editor, PsiFile file) {
List<UsageTarget> result = new ArrayList<UsageTarget>();
for (UsageTargetProvider provider : Extensions.getExtensions(EP_NAME)) {
UsageTarget[] targets = provider.getTargets(editor, file);
if (targets != null) Collections.addAll(result, targets);
}
return result.isEmpty() ? null : result.toArray(new UsageTarget[result.size()]);
}
public static UsageTarget[] findUsageTargets(PsiElement psiElement) {
List<UsageTarget> result = new ArrayList<UsageTarget>();
for (UsageTargetProvider provider : Extensions.getExtensions(EP_NAME)) {
UsageTarget[] targets = provider.getTargets(psiElement);
if (targets != null) Collections.addAll(result, targets);
}
return result.isEmpty() ? null : result.toArray(new UsageTarget[result.size()]);
}
}
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