plugins/xpath/xpath-lang/src/org/intellij/lang/xpath/xslt/quickfix/AddWithParamFix.java

/*
 * Copyright 2005 Sascha Weinreuter
 *
 * 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 org.intellij.lang.xpath.xslt.quickfix;

import com.intellij.codeInsight.template.TemplateBuilderImpl;
import com.intellij.codeInsight.template.TemplateManager;
import com.intellij.codeInsight.template.impl.MacroCallNode;
import com.intellij.codeInsight.template.macro.CompleteMacro;
import com.intellij.openapi.application.Result;
import com.intellij.openapi.application.RunResult;
import com.intellij.openapi.application.WriteAction;
import com.intellij.openapi.editor.Document;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.project.Project;
import com.intellij.psi.*;
import com.intellij.psi.xml.XmlAttribute;
import com.intellij.psi.xml.XmlTag;
import com.intellij.util.IncorrectOperationException;
import org.intellij.lang.xpath.xslt.XsltSupport;
import org.intellij.lang.xpath.xslt.psi.XsltParameter;
import org.intellij.lang.xpath.xslt.refactoring.RefactoringUtil;
import org.jetbrains.annotations.NotNull;

public class AddWithParamFix extends AbstractFix {
    protected XmlTag myTag;
    private final String myName;

    protected AddWithParamFix() {
        myName = null;
    }

    public AddWithParamFix(XsltParameter parameter, XmlTag tag) {
        myTag = tag;
        myName = parameter.getName();
    }

    @NotNull
    public String getText() {
        return "Add Argument for '" + myName + "'";
    }

    public boolean isAvailableImpl(@NotNull Project project, Editor editor, PsiFile file) {
        return myTag.isValid();
    }

    public boolean startInWriteAction() {
        return false;
    }

    protected boolean requiresEditor() {
        return true;
    }

    public void invoke(@NotNull final Project project, final Editor editor, PsiFile file) throws IncorrectOperationException {
        final RunResult<SmartPsiElementPointer<XmlTag>> result = new WriteAction<SmartPsiElementPointer<XmlTag>>() {
            protected void run(Result<SmartPsiElementPointer<XmlTag>> result) throws Throwable {
                final XmlTag withParamTag = RefactoringUtil.addWithParam(myTag);

                withParamTag.setAttribute("name", myName != null ? myName : "dummy");
                withParamTag.setAttribute("select", "dummy");

                result.setResult(SmartPointerManager.getInstance(project).
                        createSmartPsiElementPointer(withParamTag));
            }
        }.execute();

        final PsiDocumentManager psiDocumentManager = PsiDocumentManager.getInstance(project);
        final Document doc = psiDocumentManager.getDocument(file);
        assert doc != null;
        psiDocumentManager.doPostponedOperationsAndUnblockDocument(doc);

        final XmlTag withParamTag = result.getResultObject().getElement();
        assert withParamTag != null;

        final TemplateBuilderImpl builder = new TemplateBuilderImpl(withParamTag);
        final XmlAttribute selectAttr = withParamTag.getAttribute("select", null);
        assert selectAttr != null;
        PsiElement dummy = XsltSupport.getAttValueToken(selectAttr);
        builder.replaceElement(dummy, new MacroCallNode(new CompleteMacro()));

        if (myName == null) {
            final XmlAttribute nameAttr = withParamTag.getAttribute("name", null);
            assert nameAttr != null;
            dummy = XsltSupport.getAttValueToken(nameAttr);
            builder.replaceElement(dummy, new MacroCallNode(new CompleteMacro()));
        }

        moveTo(editor, withParamTag);

        new WriteAction() {
            @SuppressWarnings({ "RawUseOfParameterizedType" })
            protected void run(Result result) throws Throwable {
                PsiDocumentManager.getInstance(project).commitDocument(editor.getDocument());
                final TemplateManager mgr = TemplateManager.getInstance(myTag.getProject());
                mgr.startTemplate(editor, builder.buildInlineTemplate());
            }
        }.execute();
    }
}