Java tutorial
/* * Copyright 2011 Vancouver Ywebb Consulting Ltd * * 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 next.i.view; import next.i.XStyle; import next.i.controller.XTableController; import com.google.gwt.event.dom.client.ClickEvent; import com.google.gwt.event.dom.client.ClickHandler; import com.google.gwt.event.dom.client.HasClickHandlers; import com.google.gwt.event.shared.HandlerRegistration; import com.google.gwt.user.client.Timer; import com.google.gwt.user.client.ui.Composite; import com.google.gwt.user.client.ui.FlexTable; import com.google.gwt.user.client.ui.FlexTable.FlexCellFormatter; import com.google.gwt.user.client.ui.FlowPanel; import com.google.gwt.user.client.ui.HasHorizontalAlignment; import com.google.gwt.user.client.ui.HasVerticalAlignment; import com.google.gwt.user.client.ui.Image; import com.google.gwt.user.client.ui.IsWidget; import com.google.gwt.user.client.ui.Label; import com.google.gwt.user.client.ui.Widget; /** * This class defines the attributes and behavior of cells in a table view. * * <p> * <img class='ai' src='../../../resources/XTableCell.png' /> * </p> */ public class XTableCell extends Composite implements IsWidget, HasClickHandlers { private Widget _panel; private boolean _isFromController = false; private CellData data; /** * Use this constructor to manually create a XTableCell using CellData. */ public XTableCell(CellData cellData) { XTableCell_(cellData); } public XTableCell(Image westIcon, Label titleLabel, Image eastIcon) { XTableCell_(westIcon, titleLabel, eastIcon); } /** * This constructor is used by XTableController to bind the Cell and the View * together. */ public XTableCell(final int index, final XTableController tableController, final CellData data) { _isFromController = true; XTableCell_(data); addClickHandler(new ClickHandler() { public void onClick(ClickEvent event) { _panel.addStyleName(XStyle.selected.name()); // Window.alert("selecetd..."); new Timer() { public void run() { if (tableController != null) { tableController.doOnRowSelected(index, data, XTableCell.this); } } }.schedule(10); } }); } public HandlerRegistration addClickHandler(ClickHandler handler) { return addClickHandler_(handler); } public void showChevron(boolean showChevron) { showChevron_(showChevron); } /** * private */ private HandlerRegistration addClickHandler_(ClickHandler handler) { return addDomHandler(handler, ClickEvent.getType()); } private void showChevron_(boolean showChevron) { if (showChevron) { addStyleName(XStyle.chevron.name()); } else { removeStyleName(XStyle.chevron.name()); } } private void XTableCell_(CellData cellData) { FlexTable xt = new FlexTable(); _panel = xt; initWidget(_panel); _panel.setStyleName(XStyle.tableCell.name()); FlexCellFormatter fcf = xt.getFlexCellFormatter(); Widget[] westW = cellData.getWestWidgets(); Widget[] eastW = cellData.getEastWidgets(); Widget[] textW = cellData.getTextWidgets(); int colInx = 0; int westLen = 0; if (westW != null) { westLen = westW.length; for (Widget w : westW) { xt.setWidget(0, colInx, w); if (textW != null) { fcf.setRowSpan(0, colInx, textW.length); fcf.setHorizontalAlignment(0, colInx, HasHorizontalAlignment.ALIGN_LEFT); fcf.setVerticalAlignment(0, colInx, HasVerticalAlignment.ALIGN_MIDDLE); } colInx++; } } if (textW != null) { for (int i = 0; i < textW.length; i++) { if (i == 0) { xt.setWidget(i, colInx, textW[i]); fcf.setWidth(i, colInx, "99%"); } else { xt.setWidget(i, colInx - westLen, textW[i]); } } colInx++; } if (eastW != null) { for (Widget w : eastW) { xt.setWidget(0, colInx, w); if (textW != null) { fcf.setRowSpan(0, colInx, textW.length); fcf.setHorizontalAlignment(0, colInx, HasHorizontalAlignment.ALIGN_RIGHT); } colInx++; } } // TODO toggle state if (!_isFromController) { addClickHandler(new ClickHandler() { public void onClick(ClickEvent event) { _panel.addStyleName(XStyle.selected.name()); new Timer() { public void run() { removeStyleName(XStyle.selected.name()); } }.schedule(300); } }); } } private void XTableCell_(Image westIcon, Label titleLabel, Image eastIcon) { _panel = new FlowPanel(); initWidget(_panel); _panel.setStyleName(XStyle.tableCell.name()); // this.title = titleText; // if(titleText == null){ // throw new RuntimeException("titleText == null"); // } // assert (null == titleText) : "titleText can not be null."; // Content // Label _contentView = new Label(titleText); titleLabel.setStyleName(XStyle.tableCellTitle.name()); ((FlowPanel) _panel).add(titleLabel); if (westIcon != null) { westIcon.addStyleName(XStyle.tableCellWestImage.name()); int height = westIcon.getHeight(); int width = westIcon.getWidth(); westIcon.getElement().getStyle().setProperty("marginTop", "-" + (height / 2) + "px"); titleLabel.getElement().getStyle().setProperty("marginLeft", "" + (width + 20) + "px"); ((FlowPanel) _panel).add(westIcon); } if (eastIcon != null) { ((FlowPanel) _panel).add(eastIcon); eastIcon.addStyleName(XStyle.tableCellEastImage.name()); int height = eastIcon.getHeight(); eastIcon.getElement().getStyle().setProperty("marginTop", "-" + (height / 2) + "px"); } // TODO toggle state if (!_isFromController) { addClickHandler(new ClickHandler() { public void onClick(ClickEvent event) { _panel.addStyleName(XStyle.selected.name()); new Timer() { public void run() { removeStyleName(XStyle.selected.name()); } }.schedule(300); } }); } } // @Override public CellData getData() { return data; } }