List of usage examples for com.vaadin.client Util isTouchEvent
@Deprecated public static boolean isTouchEvent(NativeEvent event)
From source file:com.haulmont.cuba.web.widgets.client.addons.dragdroplayouts.ui.VLayoutDragDropMouseHandler.java
License:Apache License
/** * Called when the dragging a component should be initiated by both a mouse * down event as well as a touch start event * * FIXME This method is a BIG hack to circumvent Vaadin's very poor client * side API's. This will break often. Refactor once Vaadin gets a grip. * * @param event//from ww w .j a v a 2 s. c o m */ protected void initiateDrag(NativeEvent event) { // Check that dragging is enabled if (dragMode == LayoutDragMode.NONE) { return; } // Dragging can only be done with left mouse button and no modifier keys if (!isMouseDragEvent(event) && !Util.isTouchEvent(event)) { return; } // Get target widget EventTarget eventTarget = event.getEventTarget(); Element targetElement = Element.as(eventTarget); Widget target = WidgetUtil.findWidget(targetElement, null); if (isEventOnScrollBar(event)) { return; } // do not drag close button of TabSheet tab if (isElementNotDraggable(targetElement)) { VDragAndDropManager.get().interruptDrag(); return; } // Abort if drag mode is caption mode and widget is not a caption boolean isPanelCaption = target instanceof VPanel && targetElement.getParentElement().getClassName().contains("v-panel-caption"); boolean isCaption = isPanelCaption || VDragDropUtil.isCaptionOrCaptionless(target); if (dragMode == LayoutDragMode.CAPTION && !isCaption) { /* * Ensure target is a caption in caption mode */ return; } if (dragMode == LayoutDragMode.CAPTION && isCaption) { /* * Ensure that captions in nested layouts don't get accepted if in * caption mode */ Widget w = VDragDropUtil.getTransferableWidget(target); ComponentConnector c = Util.findConnectorFor(w); ComponentConnector parent = (ComponentConnector) c.getParent(); if (parent.getWidget() != root) { return; } } // Create the transfarable VTransferable transferable = VDragDropUtil.createLayoutTransferableFromMouseDown(event, root, target); // Are we trying to drag the root layout if (transferable == null) { VConsole.log("Creating transferable on mouse down returned null"); return; } // Resolve the component final Widget w; ComponentConnector c = null, parent = null; if (target instanceof TabCaption) { TabCaption tabCaption = (TabCaption) target; Tab tab = tabCaption.getTab(); int tabIndex = ((ComplexPanel) tab.getParent()).getWidgetIndex(tab); VTabsheet tabsheet = tab.getTabsheet(); w = tab; c = tabsheet.getTab(tabIndex); parent = Util.findConnectorFor(tabsheet); } else if (root instanceof VDDAccordion) { w = target; parent = Util.findConnectorFor(root); StackItem tab = WidgetUtil.findWidget(targetElement, StackItem.class); if (tab != null && root.getElement().isOrHasChild(tab.getElement())) { c = ((VDDAccordion) root).getTab(((VDDAccordion) root).getTabPosition(tab)); } } else if (transferable.getData(Constants.TRANSFERABLE_DETAIL_COMPONENT) != null) { ComponentConnector connector = (ComponentConnector) transferable .getData(Constants.TRANSFERABLE_DETAIL_COMPONENT); w = connector.getWidget(); c = Util.findConnectorFor(w); parent = (ComponentConnector) c.getParent(); } else { // Failsafe if no widget was found w = root; c = Util.findConnectorFor(w); parent = (ComponentConnector) c.getParent(); VConsole.log("Could not resolve component, using root as component"); } VConsole.log("Dragging widget: " + w); VConsole.log(" in parent: " + parent); // Ensure component is draggable if (!VDragDropUtil.isDraggingEnabled(parent, w)) { VConsole.log("Dragging disabled for " + w.getClass().getName() + " in " + parent.getWidget().getClass().getName()); VDragAndDropManager.get().interruptDrag(); return; } // Announce drag start to listeners for (DragStartListener dl : dragStartListeners) { if (!dl.dragStart(w, dragMode)) { VDragAndDropManager.get().interruptDrag(); return; } } currentDraggedWidget = w; // Announce to handler that we are starting a drag operation VDragEvent currentDragEvent = VDragAndDropManager.get().startDrag(transferable, event, true); /* * Create the drag image */ boolean hasDragCaption = false; com.google.gwt.dom.client.Element dragImageElement = null; if (root instanceof VHasDragCaptionProvider) { VDragCaptionProvider dragCaptionProvider = ((VHasDragCaptionProvider) root).getDragCaptionProvider(); if (dragCaptionProvider != null) { hasDragCaption = true; dragImageElement = dragCaptionProvider.getDragCaptionElement(currentDraggedWidget); } } if (!hasDragCaption && dragImageProvider != null) { dragImageElement = dragImageProvider.getDragImageElement(w); } if (dragImageElement != null) { // Set stylename to proxy component as well if (hasDragCaption) { dragImageElement.addClassName(ACTIVE_DRAG_CUSTOM_IMAGE_STYLENAME); } else { dragImageElement.addClassName(ACTIVE_DRAG_SOURCE_STYLENAME); } } else if (root instanceof VCssLayout) { /* * CSS Layout does not have an enclosing div so we just use the * component div */ dragImageElement = w.getElement(); } else if (root instanceof VTabsheet) { /* * Tabsheet should use the dragged tab as a drag image */ dragImageElement = targetElement; } else if (root instanceof VAccordion) { /* * Accordion should use the dragged tab as a drag image */ dragImageElement = targetElement; } else if (root instanceof VFormLayout) { /* * Dragging a component in a form layout should include the caption * and error indicator as well */ Element rowElement = (Element) VDDFormLayout .getRowFromChildElement((com.google.gwt.dom.client.Element) w.getElement().cast(), (com.google.gwt.dom.client.Element) root.getElement().cast()) .cast(); dragImageElement = rowElement; } else { /* * For other layouts we just use the target element; */ dragImageElement = w.getElement(); } Element clone; if (hasDragCaption) { currentDragEvent.setDragImage(dragImageElement); clone = dragImageElement; } else { currentDragEvent.createDragImage(dragImageElement, true); clone = currentDragEvent.getDragImage(); } assert (clone != null); // Lock drag image dimensions if (!hasDragCaption) { clone.getStyle().setWidth(dragImageElement.getOffsetWidth(), Style.Unit.PX); clone.getStyle().setHeight(dragImageElement.getOffsetHeight(), Style.Unit.PX); } if (c != null && c.delegateCaptionHandling() && !(root instanceof VTabsheet) && !(root instanceof VAccordion)) { /* * Captions are not being dragged with the widget since they are * separate. Manually add a clone of the caption to the drag image. */ if (target instanceof VCaption) { clone.insertFirst(targetElement.cloneNode(true)); } } if (BrowserInfo.get().isIE()) { // Fix IE not aligning the drag image correctly when dragging // layouts clone.getStyle().setPosition(Position.ABSOLUTE); } currentDraggedWidget.addStyleName(ACTIVE_DRAG_SOURCE_STYLENAME); // Listen to mouse up for cleanup mouseUpHandlerReg = Event.addNativePreviewHandler(new Event.NativePreviewHandler() { @Override public void onPreviewNativeEvent(NativePreviewEvent event) { if (event.getTypeInt() == Event.ONMOUSEUP || event.getTypeInt() == Event.ONTOUCHEND || event.getTypeInt() == Event.ONTOUCHCANCEL) { if (mouseUpHandlerReg != null) { mouseUpHandlerReg.removeHandler(); if (currentDraggedWidget != null) { currentDraggedWidget.removeStyleName(ACTIVE_DRAG_SOURCE_STYLENAME); if (dragImageProvider != null) { com.google.gwt.dom.client.Element dragImageElement = dragImageProvider .getDragImageElement(currentDraggedWidget); if (dragImageElement != null) { dragImageElement.removeClassName(ACTIVE_DRAG_SOURCE_STYLENAME); } } currentDraggedWidget = null; } } // Ensure capturing is turned off at mouse up Event.releaseCapture(RootPanel.getBodyElement()); } } }); }
From source file:fi.jasoft.dragdroplayouts.client.ui.VLayoutDragDropMouseHandler.java
License:Apache License
/** * Called when the dragging a component should be initiated by both a mouse * down event as well as a touch start event * /*from w w w . j av a 2s.c om*/ * FIXME This method is a BIG hack to circumvent Vaadin's very poor client * side API's. This will break often. Refactor once Vaadin gets a grip. * * @param event */ protected void initiateDrag(NativeEvent event) { // Check that dragging is enabled if (dragMode == LayoutDragMode.NONE) { return; } // Dragging can only be done with left mouse button and no modifier keys if (!isMouseDragEvent(event) && !Util.isTouchEvent(event)) { return; } // Get target widget EventTarget eventTarget = event.getEventTarget(); Element targetElement = Element.as(eventTarget); Widget target = WidgetUtil.findWidget(targetElement, null); if (isEventOnScrollBar(event)) { return; } // do not drag close button of TabSheet tab if (isElementNotDraggable(targetElement)) { VDragAndDropManager.get().interruptDrag(); return; } // Abort if drag mode is caption mode and widget is not a caption boolean isPanelCaption = target instanceof VPanel && targetElement.getParentElement().getClassName().contains("v-panel-caption"); boolean isCaption = isPanelCaption || VDragDropUtil.isCaptionOrCaptionless(target); if (dragMode == LayoutDragMode.CAPTION && !isCaption) { /* * Ensure target is a caption in caption mode */ return; } if (dragMode == LayoutDragMode.CAPTION && isCaption) { /* * Ensure that captions in nested layouts don't get accepted if in * caption mode */ Widget w = VDragDropUtil.getTransferableWidget(target); ComponentConnector c = Util.findConnectorFor(w); ComponentConnector parent = (ComponentConnector) c.getParent(); if (parent.getWidget() != root) { return; } } // Create the transfarable VTransferable transferable = VDragDropUtil.createLayoutTransferableFromMouseDown(event, root, target); // Are we trying to drag the root layout if (transferable == null) { VConsole.log("Creating transferable on mouse down returned null"); return; } // Resolve the component final Widget w; ComponentConnector c = null, parent = null; if (target instanceof TabCaption) { TabCaption tabCaption = (TabCaption) target; Tab tab = tabCaption.getTab(); int tabIndex = ((ComplexPanel) tab.getParent()).getWidgetIndex(tab); VTabsheet tabsheet = tab.getTabsheet(); w = tab; c = tabsheet.getTab(tabIndex); parent = Util.findConnectorFor(tabsheet); } else if (root instanceof VDDAccordion) { w = target; parent = Util.findConnectorFor(root); StackItem tab = WidgetUtil.findWidget(targetElement, StackItem.class); if (tab != null && root.getElement().isOrHasChild(tab.getElement())) { c = ((VDDAccordion) root).getTab(((VDDAccordion) root).getTabPosition(tab)); } } else if (transferable.getData(Constants.TRANSFERABLE_DETAIL_COMPONENT) != null) { ComponentConnector connector = (ComponentConnector) transferable .getData(Constants.TRANSFERABLE_DETAIL_COMPONENT); w = connector.getWidget(); c = Util.findConnectorFor(w); parent = (ComponentConnector) c.getParent(); } else { // Failsafe if no widget was found w = root; c = Util.findConnectorFor(w); parent = (ComponentConnector) c.getParent(); VConsole.log("Could not resolve component, using root as component"); } VConsole.log("Dragging widget: " + w); VConsole.log(" in parent: " + parent); // Ensure component is draggable if (!VDragDropUtil.isDraggingEnabled(parent, w)) { VConsole.log("Dragging disabled for " + w.getClass().getName() + " in " + parent.getWidget().getClass().getName()); VDragAndDropManager.get().interruptDrag(); return; } // Announce drag start to listeners for (DragStartListener dl : dragStartListeners) { if (!dl.dragStart(w, dragMode)) { VDragAndDropManager.get().interruptDrag(); return; } } currentDraggedWidget = w; // Announce to handler that we are starting a drag operation VDragEvent currentDragEvent = VDragAndDropManager.get().startDrag(transferable, event, true); /* * Create the drag image */ com.google.gwt.dom.client.Element dragImageElement = dragImageProvider == null ? null : dragImageProvider.getDragImageElement(w); if (dragImageElement != null) { // Set stylename to proxy component as well dragImageElement.addClassName(ACTIVE_DRAG_SOURCE_STYLENAME); } else if (root instanceof VCssLayout) { /* * CSS Layout does not have an enclosing div so we just use the * component div */ dragImageElement = w.getElement(); } else if (root instanceof VTabsheet) { /* * Tabsheet should use the dragged tab as a drag image */ dragImageElement = targetElement; } else if (root instanceof VAccordion) { /* * Accordion should use the dragged tab as a drag image */ dragImageElement = targetElement; } else if (root instanceof VFormLayout) { /* * Dragging a component in a form layout should include the caption * and error indicator as well */ Element rowElement = (Element) VDDFormLayout .getRowFromChildElement((com.google.gwt.dom.client.Element) w.getElement().cast(), (com.google.gwt.dom.client.Element) root.getElement().cast()) .cast(); dragImageElement = rowElement; } else { /* * For other layouts we just use the target element; */ dragImageElement = w.getElement(); } currentDragEvent.createDragImage(dragImageElement, true); Element clone = currentDragEvent.getDragImage(); assert (clone != null); // Lock drag image dimensions clone.getStyle().setWidth(dragImageElement.getOffsetWidth(), Unit.PX); clone.getStyle().setHeight(dragImageElement.getOffsetHeight(), Unit.PX); if (c != null && c.delegateCaptionHandling() && !(root instanceof VTabsheet) && !(root instanceof VAccordion)) { /* * Captions are not being dragged with the widget since they are * separate. Manually add a clone of the caption to the drag image. */ if (target instanceof VCaption) { clone.insertFirst(targetElement.cloneNode(true)); } } if (BrowserInfo.get().isIE()) { // Fix IE not aligning the drag image correctly when dragging // layouts clone.getStyle().setPosition(Position.ABSOLUTE); } currentDraggedWidget.addStyleName(ACTIVE_DRAG_SOURCE_STYLENAME); // Listen to mouse up for cleanup mouseUpHandlerReg = Event.addNativePreviewHandler(new Event.NativePreviewHandler() { @Override public void onPreviewNativeEvent(NativePreviewEvent event) { if (event.getTypeInt() == Event.ONMOUSEUP || event.getTypeInt() == Event.ONTOUCHEND || event.getTypeInt() == Event.ONTOUCHCANCEL) { if (mouseUpHandlerReg != null) { mouseUpHandlerReg.removeHandler(); if (currentDraggedWidget != null) { currentDraggedWidget.removeStyleName(ACTIVE_DRAG_SOURCE_STYLENAME); if (dragImageProvider != null) { com.google.gwt.dom.client.Element dragImageElement = dragImageProvider .getDragImageElement(currentDraggedWidget); if (dragImageElement != null) { dragImageElement.removeClassName(ACTIVE_DRAG_SOURCE_STYLENAME); } } currentDraggedWidget = null; } } // Ensure capturing is turned off at mouse up Event.releaseCapture(RootPanel.getBodyElement()); } } }); }