/*
* 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.plugin.client.widget.media;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.annotation.PostConstruct;
import javax.enterprise.context.Dependent;
import javax.enterprise.event.Observes;
import javax.inject.Inject;
import com.google.gwt.core.client.GWT;
import com.google.gwt.dom.client.Style;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.uibinder.client.UiBinder;
import com.google.gwt.uibinder.client.UiField;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.FlowPanel;
import com.google.gwt.user.client.ui.FormPanel;
import com.google.gwt.user.client.ui.IsWidget;
import com.google.gwt.user.client.ui.RequiresResize;
import com.google.gwt.user.client.ui.Widget;
import org.gwtbootstrap3.client.ui.Button;
import org.gwtbootstrap3.client.ui.Caption;
import org.gwtbootstrap3.client.ui.Column;
import org.gwtbootstrap3.client.ui.Form;
import org.gwtbootstrap3.client.ui.Image;
import org.gwtbootstrap3.client.ui.Row;
import org.gwtbootstrap3.client.ui.ThumbnailPanel;
import org.gwtbootstrap3.client.ui.base.form.AbstractForm;
import org.gwtbootstrap3.client.ui.constants.ColumnSize;
import org.gwtbootstrap3.client.ui.constants.IconType;
import org.gwtbootstrap3.client.ui.constants.ImageType;
import org.gwtbootstrap3.client.ui.html.Paragraph;
import org.uberfire.backend.vfs.Path;
import org.uberfire.ext.plugin.client.config.PluginConfigService;
import org.uberfire.ext.plugin.event.MediaAdded;
import org.uberfire.ext.plugin.event.MediaDeleted;
import org.uberfire.ext.plugin.model.Media;
import org.uberfire.ext.widgets.common.client.common.FileUpload;
import org.uberfire.ext.widgets.common.client.common.FileUploadFormEncoder;
import org.uberfire.mvp.Command;
import org.uberfire.mvp.ParameterizedCommand;
@Dependent
public class MediaLibraryWidget extends Composite implements RequiresResize {
private static ViewBinder uiBinder = GWT.create(ViewBinder.class);
@UiField
FlowPanel content;
@UiField
Form form;
@UiField(provided = true)
FileUpload fileUpload;
@UiField
Row library;
private FileUploadFormEncoder formEncoder = new FileUploadFormEncoder();
@Inject
private PluginConfigService pluginConfigService;
private String pluginName;
private ParameterizedCommand<Media> onMediaDelete;
private Map<Path, IsWidget> mediaRef = new HashMap<Path, IsWidget>();
private List<Command> updateMediaOnSaveCommands = new ArrayList<>();
private List<Command> updateMediaOnCloseCommands = new ArrayList<>();
@PostConstruct
public void init() {
fileUpload = createFileUpload();
initWidget(uiBinder.createAndBindUi(this));
form.setEncoding(FormPanel.ENCODING_MULTIPART);
form.setMethod(FormPanel.METHOD_POST);
formEncoder.addUtf8Charset(form);
form.addSubmitHandler(new AbstractForm.SubmitHandler() {
@Override
public void onSubmit(final AbstractForm.SubmitEvent event) {
final String fileName = fileUpload.getFilename();
if (isNullOrEmpty(fileName)) {
event.cancel();
}
}
private boolean isNullOrEmpty(final String fileName) {
return fileName == null || "".equals(fileName);
}
});
form.addSubmitCompleteHandler(new AbstractForm.SubmitCompleteHandler() {
@Override
public void onSubmitComplete(final AbstractForm.SubmitCompleteEvent event) {
if ("OK".equalsIgnoreCase(event.getResults())) {
Window.alert("Upload Success");
} else if ("FAIL".equalsIgnoreCase(event.getResults())) {
Window.alert("Upload Failed");
} else if ("FAIL - ALREADY EXISTS".equalsIgnoreCase(event.getResults())) {
Window.alert("File already exists");
}
}
});
}
public void setup(final String pluginName,
final Collection<Media> mediaLibrary,
final ParameterizedCommand<Media> onMediaDelete) {
this.pluginName = pluginName;
this.onMediaDelete = onMediaDelete;
this.mediaRef.clear();
this.library.clear();
for (final Media media : mediaLibrary) {
addMedia(media);
}
}
private FileUpload createFileUpload() {
return new FileUpload(new Command() {
@Override
public void execute() {
form.setAction(GWT.getHostPageBaseURL().replaceAll("/" + GWT.getModuleName(),
"") + pluginConfigService.getMediaServletURI() + pluginName);
form.submit();
}
},
true);
}
@Override
public void onResize() {
getParent().getElement().getStyle().setBackgroundColor("#F6F6F6");
content.getElement().getStyle().setTop(60,
Style.Unit.PX);
}
public void onNewMedia(@Observes final MediaAdded mediaAddedEvent) {
if (mediaAddedEvent.getPluginName().equals(pluginName)) {
final Media media = mediaAddedEvent.getMedia();
addMedia(media);
updateMediaOnCloseCommands.add(new Command() {
@Override
public void execute() {
onMediaDelete.execute(media);
}
});
}
}
public void onMediaDelete(@Observes final MediaDeleted mediaDeleted) {
if (mediaDeleted.getPluginName().equals(pluginName)) {
final IsWidget thumb = mediaRef.get(mediaDeleted.getMedia().getPath());
if (thumb != null) {
library.remove(thumb);
}
}
}
public void addMedia(final Media media) {
final Column column = new Column(ColumnSize.XS_4);
final Button trash = new Button();
trash.setIcon(IconType.TRASH);
final ThumbnailPanel thumbnail = new ThumbnailPanel() {{
add(new Image(media.getPreviewURI()) {{
setType(ImageType.CIRCLE);
setHeight("140px");
setWidth("140px");
}});
add(new Caption() {{
add(new Paragraph(media.getExternalURI()) {{
getElement().getStyle().setProperty("maxWidth",
"180px");
}});
add(new Paragraph() {{
add(trash);
}});
}});
}};
trash.addClickHandler(getTrashClickHandler(media,
column));
column.add(thumbnail);
library.add(column);
mediaRef.put(media.getPath(),
column);
}
private ClickHandler getTrashClickHandler(final Media media,
final Column column) {
return event -> {
mediaRef.remove(media.getPath());
updateMediaOnSaveCommands.add(new Command() {
@Override
public void execute() {
onMediaDelete.execute(media);
}
});
library.remove(column);
};
}
public void updateMediaOnClose() {
for (Command command : updateMediaOnCloseCommands) {
command.execute();
}
}
public void updateMediaOnSave() {
for (Command command : updateMediaOnSaveCommands) {
command.execute();
}
updateMediaOnCloseCommands = new ArrayList<>();
}
interface ViewBinder
extends
UiBinder<Widget, MediaLibraryWidget> {
}
}