com.intellij.util.xml.tree.actions.DeleteDomElement.java Source code

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Here is the source code for com.intellij.util.xml.tree.actions.DeleteDomElement.java

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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.util.xml.tree.actions;

import com.intellij.icons.AllIcons;
import com.intellij.openapi.actionSystem.AnActionEvent;
import com.intellij.openapi.application.ApplicationBundle;
import com.intellij.openapi.application.Result;
import com.intellij.openapi.command.WriteCommandAction;
import com.intellij.openapi.ui.Messages;
import com.intellij.ui.treeStructure.SimpleNode;
import com.intellij.util.xml.DomElement;
import com.intellij.util.xml.DomFileElement;
import com.intellij.util.xml.DomUtil;
import com.intellij.util.xml.ElementPresentation;
import com.intellij.util.xml.tree.BaseDomElementNode;
import com.intellij.util.xml.tree.DomFileElementNode;
import com.intellij.util.xml.tree.DomModelTreeView;

/**
 * User: Sergey.Vasiliev
 */
public class DeleteDomElement extends BaseDomTreeAction {

    public DeleteDomElement() {
    }

    public DeleteDomElement(final DomModelTreeView treeView) {
        super(treeView);
    }

    public void actionPerformed(AnActionEvent e, DomModelTreeView treeView) {
        final SimpleNode selectedNode = treeView.getTree().getSelectedNode();

        if (selectedNode instanceof BaseDomElementNode) {

            if (selectedNode instanceof DomFileElementNode) {
                e.getPresentation().setVisible(false);
                return;
            }

            final DomElement domElement = ((BaseDomElementNode) selectedNode).getDomElement();

            final int ret = Messages.showOkCancelDialog(getPresentationText(selectedNode) + "?",
                    ApplicationBundle.message("action.remove"), Messages.getQuestionIcon());
            if (ret == 0) {
                new WriteCommandAction(domElement.getManager().getProject(), DomUtil.getFile(domElement)) {
                    protected void run(final Result result) throws Throwable {
                        domElement.undefine();
                    }
                }.execute();
            }
        }
    }

    public void update(AnActionEvent e, DomModelTreeView treeView) {
        final SimpleNode selectedNode = treeView.getTree().getSelectedNode();

        if (selectedNode instanceof DomFileElementNode) {
            e.getPresentation().setVisible(false);
            return;
        }

        boolean enabled = false;
        if (selectedNode instanceof BaseDomElementNode) {
            final DomElement domElement = ((BaseDomElementNode) selectedNode).getDomElement();
            if (domElement.isValid() && DomUtil.hasXml(domElement)
                    && !(domElement.getParent() instanceof DomFileElement)) {
                enabled = true;
            }
        }

        e.getPresentation().setEnabled(enabled);

        if (enabled) {
            e.getPresentation().setText(getPresentationText(selectedNode));
        } else {
            e.getPresentation().setText(ApplicationBundle.message("action.remove"));
        }

        e.getPresentation().setIcon(AllIcons.General.Remove);
    }

    private static String getPresentationText(final SimpleNode selectedNode) {
        String removeString = ApplicationBundle.message("action.remove");
        final ElementPresentation presentation = ((BaseDomElementNode) selectedNode).getDomElement()
                .getPresentation();
        removeString += " " + presentation.getTypeName()
                + (presentation.getElementName() == null || presentation.getElementName().trim().length() == 0 ? ""
                        : ": " + presentation.getElementName());
        return removeString;
    }
}