[jbosstools-issues] [JBoss JIRA] Resolved: (JBIDE-2671) opening page fails with "div by zero"

opening page fails with "div by zero" ------------------------------------- Key: JBIDE-2671 URL: https://jira.jboss.org/jira/browse/JBIDE-2671 Project: Tools (JBoss Tools) Issue Type: Bug Components: jsp/jsf/xml source editing Environment: eclipse 3.4, debian/unstable, linux 2.6.24.4, nightgly build JBossTools-200808200816-nightly-ALL-linux-gtk.zip Reporter: arne anka Assignee: Snjezana Peco Priority: Blocker Fix For: 3.0.0.beta1 tried to open a generated login.xhtml of seam. the source tab stays gray, but after several attempts it opened somehow in the "visual/source" tab with some visual rendering (which i did not select! in perefernces "source" tab is set as default, visual part is set to 0%). "source" and "preview" are still gray and after checking these tabs "visual/source" is as well. the log shows !ENTRY org.eclipse.ui 4 0 2008-08-20 18:32:15.210 !MESSAGE Unhandled event loop exception !STACK 0 java.lang.ArithmeticException: / by zero at org.eclipse.swt.custom.SashFormLayout.layout(SashFormLayout.java:175) at org.eclipse.swt.widgets.Composite.updateLayout(Composite.java:1423) at org.eclipse.swt.widgets.Composite.layout(Composite.java:919) at org.eclipse.swt.widgets.Composite.layout(Composite.java:877) at org.jboss.tools.vpe.editor.xpl.CustomSashForm.layout(CustomSashForm.java:232) at org.eclipse.swt.widgets.Composite.layout(Composite.java:840) at org.jboss.tools.vpe.editor.VpeEditorPart.setVisualMode(VpeEditorPart.java:424) at org.jboss.tools.jst.jsp.jspeditor.JSPMultiPageEditor.pageChange(JSPMultiPageEditor.java:228) at org.jboss.tools.jst.jsp.jspeditor.JSPMultiPageEditorPart$2.widgetSelected(JSPMultiPageEditorPart.java:106) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:228) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1158) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1182) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1167) at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1007) at org.eclipse.swt.custom.CTabFolder.setSelection(CTabFolder.java:3242) at org.eclipse.swt.custom.CTabFolder.onMouse(CTabFolder.java:2017) at org.eclipse.swt.custom.CTabFolder$1.handleEvent(CTabFolder.java:320) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1158) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3401) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3033) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2382) at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2346) at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2198) at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:493) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:288) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:488) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:113) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:193) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:382) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179) 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 org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:549) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:504) at org.eclipse.equinox.launcher.Main.run(Main.java:1236) to me it seems like the visual editor tries to render the page and fails horribly since parameters are missing. if this is true, it poses two questions: - why is the ve initialized at all - why is it not capable to cope with missing parameters -- it should be the case almost every time anything other than plain html is written. i got the same error for the iText testpage from the itext seam example jboss-seam-2.0.1.GA/examples/itext/view/pageSize.xhtml further attempts to comment out parts of the page resultet in nothing -- the editor tab that was open by default was in no way predictable, and switching to another tab made any tab plain gray. even a completely commented out page was not opened. below the code of the page, it is completely generated by seam! <!DOCTYPE composition PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <ui:composition xmlns="http://www.w3.org/1999/xhtml" xmlns:s="http://jboss.com/products/seam/taglib" xmlns:ui="http://java.sun.com/jsf/facelets" xmlns:f="http://java.sun.com/jsf/core" xmlns:h="http://java.sun.com/jsf/html" xmlns:rich="http://richfaces.org/rich" template="layout/template.xhtml"> <ui:define name="body"> <h:messages styleClass="message"/> <h:form id="login"> <rich:panel> <f:facet name="header">Login</f:facet> <p>Please login here</p> <div class="dialog"> <h:panelGrid columns="2" rowClasses="prop" columnClasses="name,value"> <h:outputLabel for="username">Username</h:outputLabel> <h:inputText id="username" value="#{identity.username}"/> <h:outputLabel for="password">Password</h:outputLabel> <h:inputSecret id="password" value="#{identity.password}"/> <h:outputLabel for="rememberMe">Remember me</h:outputLabel> <h:selectBooleanCheckbox id="rememberMe" value="#{identity.rememberMe}"/> </h:panelGrid> </div> <p> <i>Note - </i> Please use demo/password to log in the first time. After logging in you may then use the User Manager link to manage user accounts. </p> </rich:panel> <div class="actionButtons"> <h:commandButton value="Login" action="#{identity.login}"/> </div> </h:form> </ui:define> </ui:composition>