List of usage examples for com.google.gwt.user.client.ui Label addDragOverHandler
public HandlerRegistration addDragOverHandler(DragOverHandler handler)
From source file:com.gwt2go.dev.client.ui.widget.LazySimplePanel.java
License:Apache License
@Override protected Widget createWidget() { SimplePanel panel = new SimplePanel(); VerticalPanel vrPanel = new VerticalPanel(); final Label label = new Label("Drag me"); label.getElement().setDraggable(Element.DRAGGABLE_TRUE); label.addDragStartHandler(new DragStartHandler() { @Override/* w w w. ja v a 2s .com*/ public void onDragStart(DragStartEvent event) { // required event.setData("text", "Hello World"); // optinal: show copy of the image event.getDataTransfer().setDragImage(label.getElement(), 10, 10); } }); // some widgets do not implement drag handles // for that reason you can use addDomHandler() /* label.addDomHandler(new DragStartHandler() { @Override public void onDragStart(DragStartEvent event) { // required event.setData("text", "Hello World again;)"); // optional event.getDataTransfer().setDragImage(label.getElement(), 10, 10); } }, DragStartEvent.getType()); */ final Label target = new Label("Drag onto me"); // required: you must add dragoverhandler to create a target target.addDragOverHandler(new DragOverHandler() { @Override public void onDragOver(DragOverEvent event) { target.getElement().getStyle().setBackgroundColor("#ffa"); } }); // add drop hanlder target.addDropHandler(new DropHandler() { @Override public void onDrop(DropEvent event) { // prevent the native text drop event.preventDefault(); // get the data out of the event String data = event.getData("text"); target.setText(data); } }); panel.add(vrPanel); vrPanel.getElement().appendChild(this.nameSpan); vrPanel.add(label); vrPanel.add(target); return panel; }
From source file:it.alexabbi.aproject.client.ui.second.SecondPageImpl.java
License:Open Source License
public SecondPageImpl() { logger.info("SecondPageImpl"); initWidget(binder.createAndBindUi(this)); Storage storage = Storage.getLocalStorageIfSupported(); if (storage != null) { storage.setItem("a", "pippo"); }//from www.j a v a 2s.c o m final String valore = storage.getItem("a"); final Label label = new Label(); label.setText("DRAG ME"); label.getElement().setDraggable("TRUE"); pannello.add(label); label.addDragStartHandler(new DragStartHandler() { @Override public void onDragStart(DragStartEvent event) { event.setData("prova", "DROPPATO"); //event.getDataTransfer().setDragImage(label, 10, 10); } }); final Label label2 = new Label(); label2.setText("DROP HERE"); pannello2.add(label2); label2.addDragOverHandler(new DragOverHandler() { @Override public void onDragOver(DragOverEvent event) { //label2.getElement().setTitle("cicco"); } }); label2.addDropHandler(new DropHandler() { @Override public void onDrop(DropEvent event) { // TODO Auto-generated method stub event.preventDefault(); String data = event.getData("prova"); label2.setText(data); } }); }
From source file:org.wisepersist.gwt.uploader.demo.client.MultiUploadWithProgressBarAndDragAndDrop.java
License:Apache License
@Override public Widget getUploaderPanel() { final VerticalPanel progressBarPanel = new VerticalPanel(); final Map<String, ProgressBar> progressBars = new LinkedHashMap<String, ProgressBar>(); final Map<String, Image> cancelButtons = new LinkedHashMap<String, Image>(); uploader.setUploadURL("/upload").setButtonImageURL(AppResources.INSTANCE.upload().getSafeUri().asString()) .setButtonWidth(133).setButtonHeight(22).setFileSizeLimit("50 MB") .setButtonCursor(Uploader.Cursor.HAND).setButtonAction(Uploader.ButtonAction.SELECT_FILES) .setFileQueuedHandler(new FileQueuedHandler() { public boolean onFileQueued(final FileQueuedEvent fileQueuedEvent) { // Create a Progress Bar for this file final ProgressBar progressBar = new ProgressBar(0.0, 1.0, 0.0, new CancelProgressBarTextFormatter()); progressBar.setTitle(fileQueuedEvent.getFile().getName()); progressBar.setHeight("18px"); progressBar.setWidth("200px"); progressBars.put(fileQueuedEvent.getFile().getId(), progressBar); // Add Cancel Button Image final Image cancelButton = new Image( AppResources.INSTANCE.cancel().getSafeUri().asString()); cancelButton.setStyleName("cancelButton"); cancelButton.addClickHandler(new ClickHandler() { public void onClick(ClickEvent event) { uploader.cancelUpload(fileQueuedEvent.getFile().getId(), false); progressBars.get(fileQueuedEvent.getFile().getId()).setProgress(-1.0d); cancelButton.removeFromParent(); }/*w w w . ja va 2 s.co m*/ }); cancelButtons.put(fileQueuedEvent.getFile().getId(), cancelButton); // Add the Bar and Button to the interface HorizontalPanel progressBarAndButtonPanel = new HorizontalPanel(); progressBarAndButtonPanel.add(progressBar); progressBarAndButtonPanel.add(cancelButton); progressBarPanel.add(progressBarAndButtonPanel); return true; } }).setUploadProgressHandler(new UploadProgressHandler() { public boolean onUploadProgress(UploadProgressEvent uploadProgressEvent) { ProgressBar progressBar = progressBars.get(uploadProgressEvent.getFile().getId()); progressBar.setProgress((double) uploadProgressEvent.getBytesComplete() / uploadProgressEvent.getBytesTotal()); return true; } }).setUploadCompleteHandler(new UploadCompleteHandler() { public boolean onUploadComplete(UploadCompleteEvent uploadCompleteEvent) { cancelButtons.get(uploadCompleteEvent.getFile().getId()).removeFromParent(); uploader.startUpload(); return true; } }).setFileDialogStartHandler(new FileDialogStartHandler() { public boolean onFileDialogStartEvent(FileDialogStartEvent fileDialogStartEvent) { if (uploader.getStats().getUploadsInProgress() <= 0) { // Clear the uploads that have completed, if none are in process progressBarPanel.clear(); progressBars.clear(); cancelButtons.clear(); } return true; } }).setFileDialogCompleteHandler(new FileDialogCompleteHandler() { public boolean onFileDialogComplete(FileDialogCompleteEvent fileDialogCompleteEvent) { if (fileDialogCompleteEvent.getTotalFilesInQueue() > 0) { if (uploader.getStats().getUploadsInProgress() <= 0) { uploader.startUpload(); } } return true; } }).setFileQueueErrorHandler(new FileQueueErrorHandler() { public boolean onFileQueueError(FileQueueErrorEvent fileQueueErrorEvent) { Window.alert("Upload of file " + fileQueueErrorEvent.getFile().getName() + " failed due to [" + fileQueueErrorEvent.getErrorCode().toString() + "]: " + fileQueueErrorEvent.getMessage()); return true; } }).setUploadErrorHandler(new UploadErrorHandler() { public boolean onUploadError(UploadErrorEvent uploadErrorEvent) { cancelButtons.get(uploadErrorEvent.getFile().getId()).removeFromParent(); Window.alert("Upload of file " + uploadErrorEvent.getFile().getName() + " failed due to [" + uploadErrorEvent.getErrorCode().toString() + "]: " + uploadErrorEvent.getMessage()); return true; } }); VerticalPanel verticalPanel = new VerticalPanel(); verticalPanel.add(uploader); if (Uploader.isAjaxUploadWithProgressEventsSupported()) { final Label dropFilesLabel = new Label("Drop Files Here"); dropFilesLabel.setStyleName("dropFilesLabel"); dropFilesLabel.addDragOverHandler(new DragOverHandler() { public void onDragOver(DragOverEvent event) { if (!uploader.getButtonDisabled()) { dropFilesLabel.addStyleName("dropFilesLabelHover"); } } }); dropFilesLabel.addDragLeaveHandler(new DragLeaveHandler() { public void onDragLeave(DragLeaveEvent event) { dropFilesLabel.removeStyleName("dropFilesLabelHover"); } }); dropFilesLabel.addDropHandler(new DropHandler() { public void onDrop(DropEvent event) { dropFilesLabel.removeStyleName("dropFilesLabelHover"); if (uploader.getStats().getUploadsInProgress() <= 0) { progressBarPanel.clear(); progressBars.clear(); cancelButtons.clear(); } uploader.addFilesToQueue(Uploader.getDroppedFiles(event.getNativeEvent())); event.preventDefault(); } }); verticalPanel.add(dropFilesLabel); } HorizontalPanel horizontalPanel = new HorizontalPanel(); horizontalPanel.add(verticalPanel); horizontalPanel.add(progressBarPanel); horizontalPanel.setVerticalAlignment(HorizontalPanel.ALIGN_MIDDLE); horizontalPanel.setCellHorizontalAlignment(uploader, HorizontalPanel.ALIGN_LEFT); horizontalPanel.setCellHorizontalAlignment(progressBarPanel, HorizontalPanel.ALIGN_RIGHT); return horizontalPanel; }