Java tutorial
/* * Copyright (c) 2011 PonySDK * Owners: * Luciano Broussal <luciano.broussal AT gmail.com> * Mathieu Barbier <mathieu.barbier AT gmail.com> * Nicolas Ciaravola <nicolas.ciaravola.pro AT gmail.com> * * WebSite: * http://code.google.com/p/pony-sdk/ * * 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 com.ponysdk.core.terminal.ui; import com.google.gwt.core.client.Scheduler; import com.google.gwt.dom.client.Document; import com.google.gwt.event.dom.client.MouseDownEvent; import com.google.gwt.event.dom.client.MouseDownHandler; import com.google.gwt.event.dom.client.MouseMoveEvent; import com.google.gwt.event.dom.client.MouseMoveHandler; import com.google.gwt.event.dom.client.MouseUpEvent; import com.google.gwt.event.dom.client.MouseUpHandler; import com.google.gwt.json.client.JSONArray; import com.google.gwt.json.client.JSONNumber; import com.google.gwt.user.client.DOM; import com.google.gwt.user.client.Window; import com.google.gwt.user.client.ui.PopupPanel; import com.ponysdk.core.model.ClientToServerModel; import com.ponysdk.core.model.HandlerModel; import com.ponysdk.core.model.ServerToClientModel; import com.ponysdk.core.terminal.UIBuilder; import com.ponysdk.core.terminal.instruction.PTInstruction; import com.ponysdk.core.terminal.model.BinaryModel; import com.ponysdk.core.terminal.model.ReaderBuffer; public class PTPopupPanel<T extends PopupPanel> extends PTSimplePanel<T> implements MouseDownHandler, MouseUpHandler, MouseMoveHandler { protected boolean autoHide; protected boolean draggable; private boolean dragging; private int dragStartX; private int dragStartY; @Override public void create(final ReaderBuffer buffer, final int objectId, final UIBuilder uiBuilder) { final BinaryModel binaryModel = buffer.readBinaryModel(); if (ServerToClientModel.POPUP_AUTO_HIDE == binaryModel.getModel()) { autoHide = binaryModel.getBooleanValue(); } else { autoHide = false; buffer.rewind(binaryModel); } super.create(buffer, objectId, uiBuilder); } @Override protected T createUIObject() { final PopupPanel popupPanel = new PopupPanel(autoHide); popupPanel.addCloseHandler(event -> { final PTInstruction instruction = new PTInstruction(getObjectID()); instruction.put(ClientToServerModel.HANDLER_CLOSE); uiBuilder.sendDataToServer(uiObject, instruction); }); return (T) popupPanel; } @Override public boolean update(final ReaderBuffer buffer, final BinaryModel binaryModel) { final ServerToClientModel model = binaryModel.getModel(); if (ServerToClientModel.ANIMATION == model) { uiObject.setAnimationEnabled(binaryModel.getBooleanValue()); return true; } else if (ServerToClientModel.CENTER == model) { uiObject.show(); uiObject.center(); return true; } else if (ServerToClientModel.OPEN == model) { uiObject.show(); return true; } else if (ServerToClientModel.POPUP_POSITION_AND_SHOW == model) { uiObject.setVisible(true); return true; } else if (ServerToClientModel.CLOSE == model) { uiObject.hide(); return true; } else if (ServerToClientModel.POPUP_GLASS_ENABLED == model) { uiObject.setGlassEnabled(binaryModel.getBooleanValue()); return true; } else if (ServerToClientModel.MODAL == model) { uiObject.setModal(binaryModel.getBooleanValue()); return true; } else if (ServerToClientModel.POSITION_LEFT == model) { final int left = binaryModel.getIntValue(); // ServerToClientModel.POSITION_TOP final int top = buffer.readBinaryModel().getIntValue(); uiObject.setPopupPosition(left, top); return true; } else if (ServerToClientModel.DRAGGABLE == model) { draggable = binaryModel.getBooleanValue(); if (draggable) { uiObject.addDomHandler(this, MouseDownEvent.getType()); uiObject.addDomHandler(this, MouseUpEvent.getType()); uiObject.addDomHandler(this, MouseMoveEvent.getType()); } return true; } else { return super.update(buffer, binaryModel); } } @Override public void onMouseDown(final MouseDownEvent event) { if (draggable && DOM.getCaptureElement() == null) { dragging = true; DOM.setCapture(uiObject.getElement()); dragStartX = event.getX(); dragStartY = event.getY(); } } @Override public void onMouseMove(final MouseMoveEvent event) { if (dragging) { final int absX = event.getX() + uiObject.getAbsoluteLeft(); final int absY = event.getY() + uiObject.getAbsoluteTop(); if (absX < Document.get().getBodyOffsetLeft() || absX >= Window.getClientWidth() || absY < Document.get().getBodyOffsetTop()) { return; } uiObject.setPopupPosition(absX - dragStartX, absY - dragStartY); } } @Override public void onMouseUp(final MouseUpEvent event) { dragging = false; DOM.releaseCapture(uiObject.getElement()); } @Override public void addHandler(final ReaderBuffer buffer, final HandlerModel handlerModel) { if (HandlerModel.HANDLER_POPUP_POSITION == handlerModel) { uiObject.setVisible(true); uiObject.show(); Scheduler.get().scheduleDeferred(() -> { final PTInstruction eventInstruction = new PTInstruction(getObjectID()); final JSONArray widgetInfo = new JSONArray(); int i = 0; widgetInfo.set(i++, new JSONNumber(uiObject.getOffsetWidth())); widgetInfo.set(i++, new JSONNumber(uiObject.getOffsetHeight())); widgetInfo.set(i++, new JSONNumber(Window.getClientWidth())); widgetInfo.set(i++, new JSONNumber(Window.getClientHeight())); eventInstruction.put(ClientToServerModel.POPUP_POSITION, widgetInfo); uiBuilder.sendDataToServer(uiObject, eventInstruction); }); } else { super.addHandler(buffer, handlerModel); } } }