MetaFileEditorPresenter.java

/*
 * Copyright 2015 JBoss, by Red Hat, Inc
 *
 * 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.uberfire.ext.widgets.core.client.editors.metafile;

import javax.enterprise.context.Dependent;
import javax.inject.Inject;

import com.google.gwt.user.client.ui.IsWidget;
import org.jboss.errai.common.client.api.Caller;
import org.jboss.errai.common.client.api.RemoteCallback;
import org.uberfire.backend.vfs.ObservablePath;
import org.uberfire.backend.vfs.Path;
import org.uberfire.backend.vfs.VFSService;
import org.uberfire.client.annotations.WorkbenchEditor;
import org.uberfire.client.annotations.WorkbenchPartTitle;
import org.uberfire.client.annotations.WorkbenchPartView;
import org.uberfire.client.workbench.type.DotResourceType;
import org.uberfire.ext.widgets.common.client.ace.AceEditorMode;
import org.uberfire.ext.widgets.core.client.editors.texteditor.TextEditorPresenter;
import org.uberfire.ext.widgets.core.client.resources.i18n.CoreConstants;
import org.uberfire.lifecycle.IsDirty;
import org.uberfire.lifecycle.OnClose;
import org.uberfire.lifecycle.OnOpen;
import org.uberfire.lifecycle.OnSave;
import org.uberfire.lifecycle.OnStartup;

@Dependent
@WorkbenchEditor(identifier = "MetaFileTextEditor", supportedTypes = {DotResourceType.class}, priority = Integer.MAX_VALUE - 100)
public class MetaFileEditorPresenter {

    @Inject
    public TextEditorPresenter.View view;

    @Inject
    private Caller<VFSService> vfsServices;

    private Path path;

    @OnStartup
    public void onStartup(final ObservablePath path) {
        this.path = path;
        vfsServices.call(new RemoteCallback<String>() {
            @Override
            public void callback(String response) {
                if (response == null) {
                    view.setContent(CoreConstants.INSTANCE.EmptyEntry(),
                                    AceEditorMode.TEXT);
                } else {
                    view.setContent(response,
                                    AceEditorMode.TEXT);
                }
            }
        }).readAllString(path);
    }

    @OnSave
    public void onSave() {
        vfsServices.call(new RemoteCallback<Path>() {
            @Override
            public void callback(Path response) {
                view.setDirty(false);
            }
        }).write(path,
                 view.getContent());
    }

    @IsDirty
    public boolean isDirty() {
        return view.isDirty();
    }

    @OnClose
    public void onClose() {
        this.path = null;
    }

    @OnOpen
    public void onOpen() {
        view.setFocus();
    }

    @WorkbenchPartTitle
    public String getTitle() {
        return CoreConstants.INSTANCE.MetaFileEditor() + " [" + path.getFileName() + "]";
    }

    @WorkbenchPartView
    public IsWidget getWidget() {
        return view;
    }
}