Error calling getRecordComponent

joe.parks@hyperproductive.com

Registered Developer

Join Date: Nov 2011
Posts: 98

Error calling getRecordComponent

23 Oct 2012, 07:37

I'm trying to get access to a component within a grid, so that I can invoke methods on it. Instead I'm getting a javascript error, "(TypeError): Unable to get value of the property '$669': object is null or undefined"

1. SmartClient Version: SNAPSHOT_v8.3d_2012-10-09/Enterprise Deployment (built 2012-10-09)

2. IE 9

3. N/A

4. N/A

5. stack trace:

Code:

ERROR: Uncaught exception escaped
com.google.gwt.event.shared.UmbrellaException: One or more exceptions caught, see full set in UmbrellaException#getCauses
	at com.google.gwt.event.shared.HandlerManager.fireEvent(HandlerManager.java:129)
	at com.smartgwt.client.widgets.BaseWidget.fireEvent(BaseWidget.java:71)
	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.MethodDispatch.invoke(MethodDispatch.java:71)
	at com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:172)
	at com.google.gwt.dev.shell.BrowserChannelServer.reactToMessagesWhileWaitingForReturn(BrowserChannelServer.java:337)
	at com.google.gwt.dev.shell.BrowserChannelServer.invokeJavascript(BrowserChannelServer.java:218)
	at com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java:136)
	at com.google.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java:561)
	at com.google.gwt.dev.shell.ModuleSpace.invokeNativeObject(ModuleSpace.java:269)
	at com.google.gwt.dev.shell.JavaScriptHost.invokeNativeObject(JavaScriptHost.java:91)
	at com.google.gwt.core.client.impl.Impl.apply(Impl.java)
	at com.google.gwt.core.client.impl.Impl.entry0(Impl.java:213)
	at sun.reflect.GeneratedMethodAccessor37.invoke(Unknown Source)
	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.MethodDispatch.invoke(MethodDispatch.java:71)
	at com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:172)
	at com.google.gwt.dev.shell.BrowserChannelServer.reactToMessages(BrowserChannelServer.java:292)
	at com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:546)
	at com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:363)
	at java.lang.Thread.run(Thread.java:662)
Caused by: com.google.gwt.core.client.JavaScriptException: (TypeError): Unable to get value of the property '$669': object is null or undefined
	at com.google.gwt.dev.shell.BrowserChannelServer.invokeJavascript(BrowserChannelServer.java:248)
	at com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java:136)
	at com.google.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java:561)
	at com.google.gwt.dev.shell.ModuleSpace.invokeNativeObject(ModuleSpace.java:269)
	at com.google.gwt.dev.shell.JavaScriptHost.invokeNativeObject(JavaScriptHost.java:91)
	at com.smartgwt.client.widgets.grid.ListGrid.getRecordComponent(ListGrid.java)
	at com.hyperproductive.play.client.PlayPoint$2.onClick(PlayPoint.java:54)
	at com.smartgwt.client.widgets.events.ClickEvent.dispatch(ClickEvent.java:101)
	at com.smartgwt.client.widgets.events.ClickEvent.dispatch(ClickEvent.java:1)
	at com.google.gwt.event.shared.GwtEvent.dispatch(GwtEvent.java:1)
	at com.google.web.bindery.event.shared.EventBus.dispatchEvent(EventBus.java:40)
	at com.google.web.bindery.event.shared.SimpleEventBus.doFire(SimpleEventBus.java:193)
	at com.google.web.bindery.event.shared.SimpleEventBus.fireEvent(SimpleEventBus.java:88)
	at com.google.gwt.event.shared.HandlerManager.fireEvent(HandlerManager.java:127)
	at com.smartgwt.client.widgets.BaseWidget.fireEvent(BaseWidget.java:71)
	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.MethodDispatch.invoke(MethodDispatch.java:71)
	at com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:172)
	at com.google.gwt.dev.shell.BrowserChannelServer.reactToMessagesWhileWaitingForReturn(BrowserChannelServer.java:337)
	at com.google.gwt.dev.shell.BrowserChannelServer.invokeJavascript(BrowserChannelServer.java:218)
	at com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java:136)
	at com.google.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java:561)
	at com.google.gwt.dev.shell.ModuleSpace.invokeNativeObject(ModuleSpace.java:269)
	at com.google.gwt.dev.shell.JavaScriptHost.invokeNativeObject(JavaScriptHost.java:91)
	at com.google.gwt.core.client.impl.Impl.apply(Impl.java)
	at com.google.gwt.core.client.impl.Impl.entry0(Impl.java:213)
	at sun.reflect.GeneratedMethodAccessor37.invoke(Unknown Source)
	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.MethodDispatch.invoke(MethodDispatch.java:71)
	at com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:172)
	at com.google.gwt.dev.shell.BrowserChannelServer.reactToMessages(BrowserChannelServer.java:292)
	at com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:546)
	at com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:363)
	at java.lang.Thread.run(Thread.java:662)

6. sample code:

module:

Code:

    @Override
    public void onModuleLoad() {

        final DataSource formDataSource = new DataSource();
        formDataSource.setClientOnly(true);
        DataSourceTextField textField = new DataSourceTextField("text", "Text", 5000);
        DataSourceTextField selectionField = new DataSourceTextField("select", "Select Something");
        formDataSource.setFields(textField, selectionField);

        final Record record1 = new Record();
        record1.setAttribute("text", "This is the initial text.");
        record1.setAttribute("select", "V2");
        final Record record2 = new Record();
        record2.setAttribute("text", "This text in the second record");
        record2.setAttribute("select", "V3");

        final SampleListGrid grid = new SampleListGrid();
        grid.setDataSource(formDataSource);
        grid.setData(new Record[] {record1, record2});

        final IButton debug = new IButton("debug");
        debug.addClickHandler(new ClickHandler() {
            @Override
            public void onClick(ClickEvent event) {
                SC.showConsole();
            }
        });
        final IButton hello = new IButton("hello");
        hello.addClickHandler(new ClickHandler() {
            @Override
            public void onClick(ClickEvent event) {
                // ERROR OCCURS HERE
                final Canvas component = grid.getRecordComponent(1);
                if (component != null) {
                    ((SampleComponent) component).sayHello();
                }
            }
        });

        final VLayout layout = new VLayout();
        layout.setMembers(debug,hello, grid);
        layout.draw();
    }

grid:

Code:

package com.hyperproductive.play.client;

import com.smartgwt.client.types.EmbeddedPosition;
import com.smartgwt.client.widgets.Canvas;
import com.smartgwt.client.widgets.grid.ListGrid;
import com.smartgwt.client.widgets.grid.ListGridRecord;

/**
 * Create a simple list grid to demonstrate component functionality
 */
public class SampleListGrid extends ListGrid {
    public SampleListGrid() {
        setBackgroundColor("white");
        setHeight100();
        setWidth100();
        setCanEdit(true);
        setCanReorderRecords(true);
        setCanAcceptDroppedRecords(true);

        setShowRecordComponents(true);
        setShowRecordComponentsByCell(false);
        setRecordComponentPosition(EmbeddedPosition.WITHIN);
        setAutoFetchData(false);
    }

    @Override
    protected Canvas createRecordComponent(ListGridRecord record, Integer colNum) {
        return new SampleComponent(record);
    }
}

component:

Code:

package com.hyperproductive.play.client;

import com.smartgwt.client.data.DataSource;
import com.smartgwt.client.data.fields.DataSourceTextField;
import com.smartgwt.client.util.SC;
import com.smartgwt.client.widgets.form.DynamicForm;
import com.smartgwt.client.widgets.grid.ListGridRecord;
import com.smartgwt.client.widgets.layout.HLayout;

/**
 * use as a component within the ListGrid
 */
public class SampleComponent extends HLayout {
    static DataSource componentDataSource;
    private ListGridRecord displayedRecord;

    static {
        componentDataSource = new DataSource();
        componentDataSource.setClientOnly(true);
        DataSourceTextField textField = new DataSourceTextField("text", "Text", 5000);
        DataSourceTextField selectionField = new DataSourceTextField("select", "Select Something");
        componentDataSource.setFields(textField, selectionField);
    }

    public SampleComponent(final ListGridRecord record) {
        super();
        this.setWidth100();
        this.displayedRecord = record;
        final DynamicForm componentForm = new DynamicForm();
        componentForm.setDataSource(componentDataSource);
        componentForm.editRecord(record);
        this.addMember(componentForm);
    }

    public void sayHello() {
        final String text = this.displayedRecord.getAttribute("text");
        SC.say("Text: " + text);
    }
}

Tags: None

Isomorphic

Administrator

Join Date: May 2006

Posts: 55257
#2

23 Oct 2012, 09:50

Thanks for the clear test case. This is indeed a bug. We've made a change to address it which will show up in the next build

Regards
Isomorphic Software
Comment
joe.parks@hyperproductive.com

Registered Developer

Join Date: Nov 2011

Posts: 98
#3

23 Oct 2012, 10:04

Thanks. I'll test it when it's available.
Comment
joe.parks@hyperproductive.com

Registered Developer

Join Date: Nov 2011

Posts: 98
#4

24 Oct 2012, 07:13

This now works as expected.
Thanks.
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