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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.postfix.templates;
import com.intellij.codeInsight.unwrap.ScopeHighlighter;
import com.intellij.openapi.application.ApplicationManager;
import com.intellij.openapi.command.CommandProcessor;
import com.intellij.openapi.editor.Document;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.util.Condition;
import com.intellij.openapi.util.Pass;
import com.intellij.psi.PsiElement;
import com.intellij.refactoring.IntroduceTargetChooser;
import com.intellij.util.containers.ContainerUtil;
import org.jetbrains.annotations.NotNull;
import java.util.List;
/**
* @author ignatov
*/
public abstract class ExpressionPostfixTemplateWithChooser extends PostfixTemplate {
@NotNull
protected final PostfixTemplatePsiInfoBase myInfo;
protected ExpressionPostfixTemplateWithChooser(@NotNull String name, @NotNull String example, @NotNull PostfixTemplatePsiInfoBase info) {
super(name, example);
myInfo = info;
}
protected ExpressionPostfixTemplateWithChooser(@NotNull String name,
@NotNull String key,
@NotNull String example,
@NotNull PostfixTemplatePsiInfoBase info) {
super(name, key, example);
myInfo = info;
}
@Override
public boolean isApplicable(@NotNull PsiElement context, @NotNull Document copyDocument, int newOffset) {
return !getExpressions(context, copyDocument, newOffset).isEmpty();
}
@Override
public void expand(@NotNull PsiElement context, @NotNull final Editor editor) {
List<PsiElement> expressions = getExpressions(context, editor.getDocument(), editor.getCaretModel().getOffset());
if (expressions.isEmpty()) {
PostfixTemplatesUtils.showErrorHint(context.getProject(), editor);
}
else if (expressions.size() == 1) {
doIt(editor, expressions.get(0));
}
else {
if (ApplicationManager.getApplication().isUnitTestMode()) {
doIt(editor, expressions.get(expressions.size() - 1));
return;
}
IntroduceTargetChooser.showChooser(
editor, expressions,
new Pass<PsiElement>() {
public void pass(@NotNull final PsiElement e) {
ApplicationManager.getApplication().runWriteAction(new Runnable() {
@Override
public void run() {
CommandProcessor.getInstance().executeCommand(e.getProject(), new Runnable() {
public void run() {
doIt(editor, e);
}
}, "Expand postfix template", PostfixLiveTemplate.POSTFIX_TEMPLATE_ID);
}
});
}
},
myInfo.getRenderer(),
"Expressions", 0, ScopeHighlighter.NATURAL_RANGER
);
}
}
@NotNull
protected List<PsiElement> getExpressions(@NotNull PsiElement context, @NotNull Document document, final int offset) {
List<PsiElement> possibleExpressions = myInfo.getExpressions(context, document, offset);
List<PsiElement> expressions = ContainerUtil.filter(possibleExpressions,
new Condition<PsiElement>() {
@Override
public boolean value(PsiElement expression) {
return expression.getTextRange().getEndOffset() == offset;
}
}
);
return ContainerUtil.filter(expressions.isEmpty() ? maybeTopmostExpression(context) : expressions, getTypeCondition());
}
@NotNull
@SuppressWarnings("unchecked")
protected Condition<PsiElement> getTypeCondition() {
return Condition.TRUE;
}
@NotNull
private List<PsiElement> maybeTopmostExpression(@NotNull PsiElement context) {
return ContainerUtil.createMaybeSingletonList(myInfo.getTopmostExpression(context));
}
protected abstract void doIt(@NotNull Editor editor, @NotNull PsiElement expression);
}
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