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/*
* 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.codeInsight.template.impl;
import com.intellij.codeInsight.CodeInsightBundle;
import com.intellij.codeInsight.intention.impl.AddOnDemandStaticImportAction;
import com.intellij.codeInsight.intention.impl.AddSingleMemberStaticImportAction;
import com.intellij.codeInsight.template.Template;
import com.intellij.openapi.editor.Document;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.editor.RangeMarker;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.util.Pair;
import com.intellij.psi.PsiDocumentManager;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiFile;
import com.intellij.psi.util.PsiUtilBase;
import com.intellij.psi.util.PsiUtilCore;
import org.jetbrains.annotations.Nls;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import static java.util.Arrays.asList;
/**
* @author Denis Zhdanov
* @since 4/27/11 3:07 PM
*/
public class ShortenToStaticImportProcessor implements TemplateOptionalProcessor {
private static final List<StaticImporter> IMPORTERS = asList(new SingleMemberStaticImporter(), new OnDemandStaticImporter());
@Override
public void processText(Project project, Template template, Document document, RangeMarker templateRange, Editor editor) {
if (!template.getValue(Template.Property.USE_STATIC_IMPORT_IF_POSSIBLE)) {
return;
}
PsiDocumentManager.getInstance(project).commitDocument(document);
final PsiFile file = PsiUtilBase.getPsiFileInEditor(editor, project);
if (file == null) {
return;
}
List<Pair<PsiElement, StaticImporter>> staticImportTargets = new ArrayList<Pair<PsiElement, StaticImporter>>();
for (
PsiElement element = PsiUtilCore.getElementAtOffset(file, templateRange.getStartOffset());
element != null && element.getTextRange().getStartOffset() < templateRange.getEndOffset();
element = getNext(element))
{
for (StaticImporter importer : IMPORTERS) {
if (importer.canPerform(element)) {
staticImportTargets.add(Pair.create(element, importer));
break;
}
}
}
Collections.reverse(staticImportTargets);
for (Pair<PsiElement, StaticImporter> pair : staticImportTargets) {
if (pair.first.isValid()) {
pair.second.perform(project, file, editor, pair.first);
}
}
}
@Nullable
private static PsiElement getNext(@NotNull PsiElement element) {
PsiElement result = element.getNextSibling();
for (PsiElement current = element; current != null && result == null; current = current.getParent()) {
result = current.getNextSibling();
}
return result;
}
@Nls
@Override
public String getOptionName() {
return CodeInsightBundle.message("dialog.edit.template.checkbox.use.static.import");
}
@Override
public boolean isEnabled(Template template) {
return template.getValue(Template.Property.USE_STATIC_IMPORT_IF_POSSIBLE);
}
@Override
public void setEnabled(Template template, boolean value) {
template.setValue(Template.Property.USE_STATIC_IMPORT_IF_POSSIBLE, value);
}
@Override
public boolean isVisible(Template template) {
return true;
}
private interface StaticImporter {
boolean canPerform(@NotNull PsiElement element);
void perform(Project project, PsiFile file, Editor editor, PsiElement element);
}
private static class SingleMemberStaticImporter implements StaticImporter {
@Override
public boolean canPerform(@NotNull PsiElement element) {
return AddSingleMemberStaticImportAction.getStaticImportClass(element) != null;
}
@Override
public void perform(Project project, PsiFile file, Editor editor, PsiElement element) {
AddSingleMemberStaticImportAction.invoke(file, element);
}
}
private static class OnDemandStaticImporter implements StaticImporter {
@Override
public boolean canPerform(@NotNull PsiElement element) {
return AddOnDemandStaticImportAction.getClassToPerformStaticImport(element) != null;
}
@Override
public void perform(Project project, PsiFile file, Editor editor, PsiElement element) {
AddOnDemandStaticImportAction.invoke(project, file, editor, element);
}
}
}
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