Le GWT et le TreePanel (s'il vous plait une reponse rapide)
Bonsoir, je rencontre un probleme avec TreePanel pour un projet a rendre demain a 8h.
j'essaye de creer un TreePanel en me basant sur www.gwt-ext.com/demo, j'ai testé un de leur code qui dit :
Code:
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| final Store storeXml = new SimpleStore(new String[]{"abbr", "country"}, getCountries());
storeXml.load();
final Template template = new Template("<div class=\"x-combo-list-item\">" +
"<img src=\"images/flags/{abbr}.gif\"> " +
"{country}<div class=\"x-clear\"></div></div>");
ComboBox cbXml = new ComboBox();
cbXml.setMinChars(1);
cbXml.setFieldLabel("Countries");
cbXml.setStore(storeXml);
cbXml.setDisplayField("country");
cbXml.setMode(ComboBox.LOCAL);
cbXml.setTriggerAction(ComboBox.ALL);
cbXml.setEmptyText("Select Country");
cbXml.setTypeAhead(true);
cbXml.setSelectOnFocus(true);
cbXml.setWidth(60);
cbXml.setResizable(true);
cbXml.setTpl(template);
cbXml.setTitle("Countries");
cbXml.setAllowBlank(false);
final TreePanel treePanel = new TreePanel();
treePanel.setWidth(240);
treePanel.setHeight(600);
treePanel.setTitle("Menu");
treePanel.setAnimate(true);
treePanel.setEnableDD(true);
treePanel.setContainerScroll(true);
treePanel.setRootVisible(true);
final XMLTreeLoader loader = new XMLTreeLoader();
loader.setDataUrl("data/menu.xml");
loader.setMethod(Connection.GET);
loader.setRootTag("countries");
loader.setFolderTitleMapping("@title");
loader.setFolderTag("team");
loader.setLeafTitleMapping("@title");
loader.setLeafTag("country");
loader.setQtipMapping("@qtip");
loader.setDisabledMapping("@disabled");
loader.setCheckedMapping("@checked");
loader.setIconMapping("@icon");
loader.setAttributeMappings(new String[]{"@rank"});
final AsyncTreeNode root = new AsyncTreeNode("Countries", loader);
treePanel.add(new TextBox());
treePanel.setRootNode(root);
root.expand();
treePanel.expandAll();
treePanel.addTool(new Tool(Tool.REFRESH, new Function() {
public void execute() {
treePanel.getEl().mask("Loading", "x-mask-loading");
root.reload();
root.collapse(true, false);
Timer timer = new Timer() {
public void run() {
treePanel.getEl().unmask();
root.expand(true, true);
}
};
timer.schedule(1000);
}
}, "Refresh"));
TreeEditor treeEditor = new TreeEditor(treePanel, cbXml); |
mais malheuresement ca marche pas ca me donne cette erreur :
Code:
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| [ERROR] Uncaught exception escaped
com.google.gwt.core.client.JavaScriptException: (RangeError): java.lang.ClassCastException: null
at java.lang.Class.cast(Class.java:2990)
at com.google.gwt.dev.shell.JsValueGlue.get(JsValueGlue.java:128)
at com.google.gwt.dev.shell.ie.SwtOleGlue.convertVariantsToObjects(SwtOleGlue.java:57)
at com.google.gwt.dev.shell.ie.IDispatchImpl.callMethod(IDispatchImpl.java:119)
at com.google.gwt.dev.shell.ie.IDispatchProxy.invoke(IDispatchProxy.java:155)
at com.google.gwt.dev.shell.ie.IDispatchImpl.Invoke(IDispatchImpl.java:294)
at com.google.gwt.dev.shell.ie.IDispatchImpl.method6(IDispatchImpl.java:194)
at org.eclipse.swt.internal.ole.win32.COMObject.callback6(COMObject.java:117)
at org.eclipse.swt.internal.ole.win32.COM.VtblCall(Native Method)
at org.eclipse.swt.internal.ole.win32.IDispatch.Invoke(IDispatch.java:64)
at org.eclipse.swt.ole.win32.OleAutomation.invoke(OleAutomation.java:493)
at org.eclipse.swt.ole.win32.OleAutomation.invoke(OleAutomation.java:417)
at com.google.gwt.dev.shell.ie.ModuleSpaceIE6.doInvokeOnWindow(ModuleSpaceIE6.java:68)
at com.google.gwt.dev.shell.ie.ModuleSpaceIE6.doInvoke(ModuleSpaceIE6.java:153)
at com.google.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java:453)
at com.google.gwt.dev.shell.ModuleSpace.invokeNativeVoid(ModuleSpace.java:251)
at com.google.gwt.dev.shell.JavaScriptHost.invokeNativeVoid(JavaScriptHost.java:107)
at com.gwtext.client.widgets.tree.TreePanel.expandAllRendered(TreePanel.java)
at com.gwtext.client.widgets.tree.TreePanel.expandAll(TreePanel.java:167)
at com.gwtext.client.widgets.tree.TreePanel$2$1.execute(TreePanel.java:161)
at com.google.gwt.user.client.CommandExecutor.doExecuteCommands(CommandExecutor.java:310)
at com.google.gwt.user.client.CommandExecutor$2.run(CommandExecutor.java:205)
at com.google.gwt.user.client.Timer.fireImpl(Timer.java:160)
at com.google.gwt.user.client.Timer.fireAndCatch(Timer.java:146)
at com.google.gwt.user.client.Timer.fire(Timer.java:138)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103)
at com.google.gwt.dev.shell.ie.IDispatchImpl.callMethod(IDispatchImpl.java:126)
at com.google.gwt.dev.shell.ie.IDispatchProxy.invoke(IDispatchProxy.java:155)
at com.google.gwt.dev.shell.ie.IDispatchImpl.Invoke(IDispatchImpl.java:294)
at com.google.gwt.dev.shell.ie.IDispatchImpl.method6(IDispatchImpl.java:194)
at org.eclipse.swt.internal.ole.win32.COMObject.callback6(COMObject.java:117)
at org.eclipse.swt.internal.win32.OS.DispatchMessageW(Native Method)
at org.eclipse.swt.internal.win32.OS.DispatchMessage(OS.java:1925)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2966)
at com.google.gwt.dev.SwtHostedModeBase.processEvents(SwtHostedModeBase.java:264)
at com.google.gwt.dev.HostedModeBase.pumpEventLoop(HostedModeBase.java:557)
at com.google.gwt.dev.HostedModeBase.run(HostedModeBase.java:405)
at com.google.gwt.dev.HostedMode.main(HostedMode.java:232)
number: -2146828279
description: java.lang.ClassCastException: null
at java.lang.Class.cast(Class.java:2990)
at com.google.gwt.dev.shell.JsValueGlue.get(JsValueGlue.java:128)
at com.google.gwt.dev.shell.ie.SwtOleGlue.convertVariantsToObjects(SwtOleGlue.java:57)
at com.google.gwt.dev.shell.ie.IDispatchImpl.callMethod(IDispatchImpl.java:119)
at com.google.gwt.dev.shell.ie.IDispatchProxy.invoke(IDispatchProxy.java:155)
at com.google.gwt.dev.shell.ie.IDispatchImpl.Invoke(IDispatchImpl.java:294)
at com.google.gwt.dev.shell.ie.IDispatchImpl.method6(IDispatchImpl.java:194)
at org.eclipse.swt.internal.ole.win32.COMObject.callback6(COMObject.java:117)
at org.eclipse.swt.internal.ole.win32.COM.VtblCall(Native Method)
at org.eclipse.swt.internal.ole.win32.IDispatch.Invoke(IDispatch.java:64)
at org.eclipse.swt.ole.win32.OleAutomation.invoke(OleAutomation.java:493)
at org.eclipse.swt.ole.win32.OleAutomation.invoke(OleAutomation.java:417)
at com.google.gwt.dev.shell.ie.ModuleSpaceIE6.doInvokeOnWindow(ModuleSpaceIE6.java:68)
at com.google.gwt.dev.shell.ie.ModuleSpaceIE6.doInvoke(ModuleSpaceIE6.java:153)
at com.google.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java:453)
at com.google.gwt.dev.shell.ModuleSpace.invokeNativeVoid(ModuleSpace.java:251)
at com.google.gwt.dev.shell.JavaScriptHost.invokeNativeVoid(JavaScriptHost.java:107)
at com.gwtext.client.widgets.tree.TreePanel.expandAllRendered(TreePanel.java)
at com.gwtext.client.widgets.tree.TreePanel.expandAll(TreePanel.java:167)
at com.gwtext.client.widgets.tree.TreePanel$2$1.execute(TreePanel.java:161)
at com.google.gwt.user.client.CommandExecutor.doExecuteCommands(CommandExecutor.java:310)
at com.google.gwt.user.client.CommandExecutor$2.run(CommandExecutor.java:205)
at com.google.gwt.user.client.Timer.fireImpl(Timer.java:160)
at com.google.gwt.user.client.Timer.fireAndCatch(Timer.java:146)
at com.google.gwt.user.client.Timer.fire(Timer.java:138)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103)
at com.google.gwt.dev.shell.ie.IDispatchImpl.callMethod(IDispatchImpl.java:126)
at com.google.gwt.dev.shell.ie.IDispatchProxy.invoke(IDispatchProxy.java:155)
at com.google.gwt.dev.shell.ie.IDispatchImpl.Invoke(IDispatchImpl.java:294)
at com.google.gwt.dev.shell.ie.IDispatchImpl.method6(IDispatchImpl.java:194)
at org.eclipse.swt.internal.ole.win32.COMObject.callback6(COMObject.java:117)
at org.eclipse.swt.internal.win32.OS.DispatchMessageW(Native Method)
at org.eclipse.swt.internal.win32.OS.DispatchMessage(OS.java:1925)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2966)
at com.google.gwt.dev.SwtHostedModeBase.processEvents(SwtHostedModeBase.java:264)
at com.google.gwt.dev.HostedModeBase.pumpEventLoop(HostedModeBase.java:557)
at com.google.gwt.dev.HostedModeBase.run(HostedModeBase.java:405)
at com.google.gwt.dev.HostedMode.main(HostedMode.java:232)
at com.gwtext.client.widgets.tree.TreePanel.expandAllRendered(Native Method)
at com.gwtext.client.widgets.tree.TreePanel.expandAll(TreePanel.java:167)
at com.gwtext.client.widgets.tree.TreePanel$2$1.execute(TreePanel.java:161)
at com.google.gwt.user.client.CommandExecutor.doExecuteCommands(CommandExecutor.java:310)
at com.google.gwt.user.client.CommandExecutor$2.run(CommandExecutor.java:205)
at com.google.gwt.user.client.Timer.fireImpl(Timer.java:160)
at com.google.gwt.user.client.Timer.fireAndCatch(Timer.java:146)
at com.google.gwt.user.client.Timer.fire(Timer.java:138) |
je crois que le probleme vient du chemin du xml "menu.xml" mais je suis pas sur et s'il vous plait j'espere avoir une reponse ce soir.
Merci.
