plugins/xpath/xpath-lang/src/org/intellij/lang/xpath/xslt/associations/impl/FileAssociationsConfigurable.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.associations.impl;

import com.intellij.codeInsight.daemon.DaemonCodeAnalyzer;
import com.intellij.ide.util.treeView.TreeState;
import com.intellij.openapi.application.ReadAction;
import com.intellij.openapi.application.Result;
import com.intellij.openapi.components.*;
import com.intellij.openapi.options.Configurable;
import com.intellij.openapi.options.ConfigurationException;
import com.intellij.openapi.options.SearchableConfigurable;
import com.intellij.openapi.options.ShowSettingsUtil;
import com.intellij.openapi.project.Project;
import com.intellij.psi.PsiFile;
import org.jetbrains.annotations.NotNull;

import javax.swing.*;

public class FileAssociationsConfigurable implements SearchableConfigurable, Configurable.NoScroll {
    private final Project myProject;
    private final UIState myState;
    private AssociationsEditor myEditor;

    public FileAssociationsConfigurable(Project project) {
        myProject = project;
        myState = ServiceManager.getService(project, UIState.class);
    }

    @Override
    public String getDisplayName() {
        return "XSLT File Associations";
    }

  @Override
  @NotNull
    public String getHelpTopic() {
        return "xslt.associations";
    }

    @Override
    public JComponent createComponent() {
        myEditor = new ReadAction<AssociationsEditor>() {
            @Override
            protected void run(Result<AssociationsEditor> result) throws Throwable {
                result.setResult(new AssociationsEditor(myProject, myState.state));
            }
        }.execute().getResultObject();
        return myEditor.getComponent();
    }

    @Override
    public synchronized boolean isModified() {
        return myEditor != null && myEditor.isModified();
    }

    @Override
    public void apply() throws ConfigurationException {
        myEditor.apply();
        DaemonCodeAnalyzer.getInstance(myProject).restart();
    }

    @Override
    public void reset() {
        myEditor.reset();
    }

    @Override
    public synchronized void disposeUIResources() {
        if (myEditor != null) {
            myState.state = myEditor.getState();
            myEditor.dispose();
            myEditor = null;
        }
    }

    public AssociationsEditor getEditor() {
        return myEditor;
    }

    public static void editAssociations(Project project, final PsiFile file) {
        final FileAssociationsConfigurable instance = new FileAssociationsConfigurable(project);

        ShowSettingsUtil.getInstance().editConfigurable(project, instance, new Runnable() {
            @Override
            public void run() {
                final AssociationsEditor editor = instance.getEditor();
                if (file != null) {
                    editor.select(file);
                }
            }
        });
    }

    @State(name = "XSLT-Support.FileAssociations.UIState",
            storages = @Storage( file = StoragePathMacros.WORKSPACE_FILE)
    )
    public static class UIState implements PersistentStateComponent<TreeState> {
        private TreeState state;

        @Override
        public TreeState getState() {
            return state != null ? state : new TreeState();
        }

        @Override
        public void loadState(TreeState state) {
            this.state = state;
        }
    }

    @Override
    @NotNull
    public String getId() {
        return getHelpTopic();
    }

    @Override
    public Runnable enableSearch(final String option) {
        return null;
    }
}