1 package autotest.common.ui; 2 3 import autotest.common.CustomHistory; 4 import autotest.common.CustomHistory.CustomHistoryListener; 5 6 import com.google.gwt.event.dom.client.ClickEvent; 7 import com.google.gwt.event.dom.client.ClickHandler; 8 import com.google.gwt.event.logical.shared.BeforeSelectionEvent; 9 import com.google.gwt.event.logical.shared.BeforeSelectionHandler; 10 import com.google.gwt.event.logical.shared.SelectionEvent; 11 import com.google.gwt.event.logical.shared.SelectionHandler; 12 import com.google.gwt.event.logical.shared.ValueChangeEvent; 13 import com.google.gwt.event.logical.shared.ValueChangeHandler; 14 import com.google.gwt.user.client.Timer; 15 import com.google.gwt.user.client.ui.Button; 16 import com.google.gwt.user.client.ui.CheckBox; 17 import com.google.gwt.user.client.ui.Composite; 18 import com.google.gwt.user.client.ui.DeckPanel; 19 import com.google.gwt.user.client.ui.HorizontalPanel; 20 import com.google.gwt.user.client.ui.Panel; 21 import com.google.gwt.user.client.ui.TabPanel; 22 import com.google.gwt.user.client.ui.VerticalPanel; 23 24 import java.util.ArrayList; 25 import java.util.Collections; 26 import java.util.List; 27 import java.util.Map; 28 29 public class CustomTabPanel extends Composite implements CustomHistoryListener, 30 BeforeSelectionHandler<Integer>, 31 SelectionHandler<Integer> { 32 private static final int AUTOREFRESH_INTERVAL = 5000; // millisecond 33 34 protected TabPanel tabPanel = new TabPanel(); 35 protected Panel otherWidgetsPanel = new HorizontalPanel(); 36 private Panel commonAreaPanel = new VerticalPanel(); 37 protected Button refreshButton = new Button("Refresh"); 38 protected CheckBox autorefreshCheckbox = new CheckBox("Auto Refresh"); 39 protected int topBarHeight = 0; 40 protected List<TabView> tabViews = new ArrayList<TabView>(); 41 private boolean doUpdateHistory = true; 42 private Timer autorefreshTimer; 43 44 public CustomTabPanel() { 45 VerticalPanel container = new VerticalPanel(); 46 HorizontalPanel top = new HorizontalPanel(); 47 VerticalPanel bottom = new VerticalPanel(); 48 container.add(top); 49 container.add(bottom); 50 51 // put the TabBar at the top left 52 top.add(tabPanel.getTabBar()); 53 top.setCellHeight(tabPanel.getTabBar(), "100%"); 54 tabPanel.getTabBar().setHeight("100%"); 55 56 // make a place for other widgets next to the tab bar 57 top.add(otherWidgetsPanel); 58 59 // put a common area above the tab deck 60 commonAreaPanel.setWidth("100%"); 61 bottom.add(commonAreaPanel); 62 63 // put the TabPanel's DeckPanel below 64 DeckPanel tabDeck = tabPanel.getDeckPanel(); 65 bottom.add(tabDeck); 66 bottom.setCellHeight(tabDeck, "100%"); 67 68 tabPanel.addBeforeSelectionHandler(this); 69 tabPanel.addSelectionHandler(this); 70 71 // transfer the DeckPanel's class to the entire bottom panel 72 String tabDeckClass = tabDeck.getStyleName(); 73 tabDeck.setStyleName(""); 74 bottom.setStyleName(tabDeckClass); 75 bottom.setWidth("100%"); 76 77 refreshButton.addClickHandler(new ClickHandler() { 78 public void onClick(ClickEvent event) { 79 getSelectedTabView().refresh(); 80 } 81 }); 82 otherWidgetsPanel.add(refreshButton); 83 84 autorefreshCheckbox.addValueChangeHandler(new ValueChangeHandler() { 85 public void onValueChange(ValueChangeEvent event) { 86 // Ensure Initialization. 87 if (autorefreshTimer == null) 88 initialize(); 89 90 Boolean value = autorefreshCheckbox.getValue(); 91 TabView selectedTabView = tabViews.get( 92 tabPanel.getTabBar().getSelectedTab()); 93 if (selectedTabView != null) 94 selectedTabView.setAutorefresh(value); 95 if (value) { 96 autorefreshTimer.scheduleRepeating(AUTOREFRESH_INTERVAL); 97 } else { 98 autorefreshTimer.cancel(); 99 } 100 } 101 }); 102 otherWidgetsPanel.add(autorefreshCheckbox); 103 104 CustomHistory.addHistoryListener(this); 105 106 top.setStyleName("custom-tab-top"); 107 container.setStyleName("custom-tab-panel"); 108 initWidget(container); 109 } 110 111 /** 112 * This must be called after this widget has been added to the page. 113 */ 114 public void initialize() { 115 // if the history token didn't provide a selected tab, default to the 116 // first tab 117 if (getSelectedTabView() == null) 118 tabPanel.selectTab(0); 119 autorefreshTimer = new Timer() { 120 @Override 121 public void run() { 122 getSelectedTabView().refresh(); 123 } 124 }; 125 } 126 127 public void addTabView(TabView tabView) { 128 tabView.attachToDocument(); 129 tabViews.add(tabView); 130 tabPanel.add(tabView.getWidget(), tabView.getTitle()); 131 } 132 133 public List<TabView> getTabViews() { 134 return Collections.unmodifiableList(tabViews); 135 } 136 137 public TabView getSelectedTabView() { 138 int selectedTab = tabPanel.getTabBar().getSelectedTab(); 139 if (selectedTab == -1) 140 return null; 141 return tabViews.get(selectedTab); 142 } 143 144 public void selectTabView(TabView tabView) { 145 for (int i = 0; i < tabViews.size(); i++) { 146 if (tabViews.get(i) == tabView) { 147 tabPanel.selectTab(i); 148 return; 149 } 150 } 151 152 throw new IllegalArgumentException("Tab not found"); 153 } 154 155 public TabPanel getTabPanel() { 156 return tabPanel; 157 } 158 159 public Panel getOtherWidgetsPanel() { 160 return otherWidgetsPanel; 161 } 162 163 public Panel getCommonAreaPanel() { 164 return commonAreaPanel; 165 } 166 167 public void onHistoryChanged(Map<String, String> arguments) { 168 String tabId = arguments.get("tab_id"); 169 if (tabId == null) { 170 return; 171 } 172 173 for (TabView tabView : tabViews) { 174 if (tabId.equals(tabView.getElementId())) { 175 tabView.ensureInitialized(); 176 if (arguments.size() > 1) { 177 // only pass along arguments if there's more than just tab_id 178 tabView.handleHistoryArguments(arguments); 179 } 180 181 if (getSelectedTabView() != tabView) { 182 doUpdateHistory = false; 183 selectTabView(tabView); 184 doUpdateHistory = true; 185 } else { 186 tabView.display(); 187 } 188 189 return; 190 } 191 } 192 } 193 194 @Override 195 public void onBeforeSelection(BeforeSelectionEvent<Integer> event) { 196 // do nothing if the user clicks the selected tab 197 if (tabPanel.getTabBar().getSelectedTab() == event.getItem()) 198 event.cancel(); 199 TabView selectedTabView = getSelectedTabView(); 200 if (selectedTabView != null) { 201 selectedTabView.hide(); 202 } 203 tabViews.get(event.getItem()).ensureInitialized(); 204 tabViews.get(event.getItem()).display(); 205 } 206 207 @Override 208 public void onSelection(SelectionEvent<Integer> event) { 209 TabView selectedTabView = tabViews.get(event.getSelectedItem()); 210 if (doUpdateHistory) 211 selectedTabView.updateHistory(); 212 // The second parameter is to fire a valueChange event if value changed. 213 autorefreshCheckbox.setValue(selectedTabView.isAutorefreshOn(), true); 214 } 215 } 216
