com.intellij.android.designer.AndroidDesignerEditorProvider.java Source code

Introduction

Here is the source code for com.intellij.android.designer.AndroidDesignerEditorProvider.java

Source

/*
 * Copyright 2000-2012 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.android.designer;

import com.intellij.openapi.application.ApplicationManager;
import com.intellij.openapi.fileEditor.*;
import com.intellij.openapi.project.DumbAware;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.util.Computable;
import com.intellij.openapi.util.Disposer;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.psi.PsiFile;
import com.intellij.psi.PsiManager;
import com.intellij.psi.xml.XmlFile;
import org.jdom.Element;
import org.jetbrains.android.dom.layout.LayoutDomFileDescription;
import org.jetbrains.android.facet.AndroidFacet;
import org.jetbrains.android.uipreview.AndroidLayoutPreviewPanel;
import org.jetbrains.annotations.NotNull;

import static org.jetbrains.android.uipreview.AndroidLayoutPreviewPanel.ANDROID_DESIGNER_ID;

/**
 * @author Alexander Lobas
 */
public final class AndroidDesignerEditorProvider implements FileEditorProvider, DumbAware {
    public static boolean acceptLayout(final @NotNull Project project, final @NotNull VirtualFile file) {
        PsiFile psiFile = ApplicationManager.getApplication().runReadAction(new Computable<PsiFile>() {
            @Override
            public PsiFile compute() {
                return file.isValid() ? PsiManager.getInstance(project).findFile(file) : null;
            }
        });
        return psiFile instanceof XmlFile && AndroidFacet.getInstance(psiFile) != null
                && LayoutDomFileDescription.isLayoutFile((XmlFile) psiFile);
    }

    @Override
    public boolean accept(@NotNull Project project, @NotNull VirtualFile file) {
        return acceptLayout(project, file);
    }

    @NotNull
    @Override
    public FileEditor createEditor(@NotNull Project project, @NotNull VirtualFile file) {
        return new AndroidDesignerEditor(project, file);
    }

    @Override
    public void disposeEditor(@NotNull FileEditor editor) {
        Disposer.dispose(editor);
    }

    @NotNull
    @Override
    public FileEditorState readState(@NotNull Element sourceElement, @NotNull Project project,
            @NotNull VirtualFile file) {
        // TODO: Auto-generated method stub
        return new FileEditorState() {
            @Override
            public boolean canBeMergedWith(FileEditorState otherState, FileEditorStateLevel level) {
                return false;
            }
        };
    }

    @Override
    public void writeState(@NotNull FileEditorState state, @NotNull Project project,
            @NotNull Element targetElement) {
        // TODO: Auto-generated method stub
    }

    @NotNull
    @Override
    public String getEditorTypeId() {
        return ANDROID_DESIGNER_ID;
    }

    @NotNull
    @Override
    public FileEditorPolicy getPolicy() {
        return FileEditorPolicy.PLACE_BEFORE_DEFAULT_EDITOR;
    }
}