/*
* Copyright 2003-2016 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 jetbrains.mps.ide.editor;
import com.intellij.openapi.fileEditor.FileEditor;
import com.intellij.openapi.fileEditor.FileEditorPolicy;
import com.intellij.openapi.fileEditor.FileEditorProvider;
import com.intellij.openapi.fileEditor.FileEditorState;
import com.intellij.openapi.project.DumbAware;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.util.Disposer;
import com.intellij.openapi.vfs.VirtualFile;
import jetbrains.mps.fileTypes.MPSFileTypeFactory;
import jetbrains.mps.ide.editor.MPSFileNodeEditor.NodeFileComputable;
import jetbrains.mps.openapi.editor.EditorState;
import jetbrains.mps.project.MPSProject;
import jetbrains.mps.smodel.ModelAccessHelper;
import jetbrains.mps.nodefs.MPSNodeVirtualFile;
import org.apache.log4j.LogManager;
import org.apache.log4j.Logger;
import org.jdom.Element;
import org.jetbrains.annotations.NonNls;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.mps.openapi.module.SRepository;
public class MPSFileNodeEditorProvider implements FileEditorProvider, DumbAware {
private static final Logger LOG = LogManager.getLogger(MPSFileNodeEditorProvider.class);
private static final String CLASS = "class";
@Override
public boolean accept(@NotNull Project project, @NotNull VirtualFile file) {
return file instanceof MPSNodeVirtualFile || file.getFileType() == MPSFileTypeFactory.MPS_ROOT_FILE_TYPE;
}
@Override
@NotNull
public FileEditor createEditor(@NotNull Project project, @NotNull final VirtualFile file) {
final MPSProject mpsProject = project.getComponent(MPSProject.class);
SRepository repository = mpsProject.getRepository();
MPSNodeVirtualFile mpsNodeVirtualFile = file instanceof MPSNodeVirtualFile
? (MPSNodeVirtualFile) file
: new ModelAccessHelper(repository).runReadAction(new NodeFileComputable(repository, file));
return mpsNodeVirtualFile != null ? new MPSFileNodeEditor(mpsProject, mpsNodeVirtualFile) : new MPSFileNodeEditor(mpsProject, file);
}
@Override
public void disposeEditor(@NotNull FileEditor editor) {
Disposer.dispose(editor);
}
@Override
@NotNull
public FileEditorState readState(@NotNull Element sourceElement, @NotNull Project project, @NotNull VirtualFile file) {
String className = sourceElement.getAttributeValue(CLASS);
if (className == null) return FileEditorState.INSTANCE;
try {
Class cls = Class.forName(className);
EditorState instance = (EditorState) cls.newInstance();
instance.load(sourceElement);
MPSEditorStateWrapper result = new MPSEditorStateWrapper();
result.setEditorState(instance);
return result;
} catch (ClassNotFoundException e){
//do nothing - class is not there anymore
} catch (Throwable t) {
LOG.error(null, t);
}
return FileEditorState.INSTANCE;
}
@Override
public void writeState(@NotNull FileEditorState state, @NotNull Project project, @NotNull Element targetElement) {
if (!(state instanceof MPSEditorStateWrapper)) return;
MPSEditorStateWrapper wrapper = (MPSEditorStateWrapper) state;
EditorState editorState = wrapper.getEditorState();
targetElement.setAttribute(CLASS, editorState.getClass().getName());
editorState.save(targetElement);
}
@Override
@NotNull
@NonNls
public String getEditorTypeId() {
return "MPSFileEditor";
}
@Override
@NotNull
public FileEditorPolicy getPolicy() {
return FileEditorPolicy.HIDE_DEFAULT_EDITOR;
}
}