1. #1
    Sencha User
    Join Date
    May 2011
    Dhaka, Bangladesh
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    tanvirr is on a distinguished road


    Default Unanswered: Problem with Set Banner in Layout : GXT 3

    Unanswered: Problem with Set Banner in Layout : GXT 3

    Now I face a great problem with GXT 3. In GXT 2 I have used "setTopComponent (getBanner());" where getBanner() is a method to load a banner. But when I use GXT 3 I do not know how I use this functionality in my current application where I use GXT 3. here I place my code. Please help me to provide me a solution.
    HTML Code:
    /* * To change this template, choose Tools | Templates * and open the template in the editor. */package com.test.client;
    import com.google.gwt.user.client.ui.Image;import com.google.gwt.user.client.ui.IsWidget;import com.google.gwt.user.client.ui.Widget;import com.sencha.gxt.core.client.util.Margins;import com.sencha.gxt.widget.core.client.ContentPanel;import com.sencha.gxt.widget.core.client.container.BorderLayoutContainer;import com.sencha.gxt.widget.core.client.container.BorderLayoutContainer.BorderLayoutData;import com.sencha.gxt.widget.core.client.container.MarginData;import com.sencha.gxt.widget.core.client.container.SimpleContainer;import com.sencha.gxt.widget.core.client.container.Viewport;
    /** * * @author tanvir.rahman */public class Layout implements IsWidget {
        @Override    public Widget asWidget() {
            final BorderLayoutContainer container = new BorderLayoutContainer();        container.setBorders(false);
            Viewport viewport = new Viewport();        viewport.add(container);
            ContentPanel banerPanel = new ContentPanel();        banerPanel.setHeadingText("LOGO");        ContentPanel menuPanel = new ContentPanel();        menuPanel.setHeadingText("Application Menu");        ContentPanel centerPanel = new ContentPanel();        centerPanel.setHeadingText("Work Space");
            //DockLayoutPanel dockPanel = new DockLayoutPanel(Style.Unit.PX);        //dockPanel.addNorth(new HTML("HEADER"), 2);
            BorderLayoutData menuData = new BorderLayoutData(220);        menuData.setCollapsible(true);        menuData.setSplit(true);        menuData.setCollapseMini(true);
            MarginData centerData = new MarginData();                BorderLayoutData bannerData = new BorderLayoutData();        //bannerData.setHidden(true);        bannerData.setMargins(new Margins(0));                container.setNorthWidget(banerPanel, bannerData);        container.setWestWidget(menuPanel, menuData);        container.setCenterWidget(centerPanel, centerData);
            SimpleContainer simpleContainer = new SimpleContainer();        simpleContainer.add(viewport);
            return simpleContainer;    }        public ContentPanel getBanner(){        ContentPanel bannerPanel = new ContentPanel();        bannerPanel.setHeaderVisible(false);        bannerPanel.add(new Image("resource/img/UCL.png"));        return bannerPanel;    }}

  2. #2
    Sencha - GXT Dev Team
    Join Date
    Feb 2009
    Vote Rating
    Colin Alworth is just really nice Colin Alworth is just really nice Colin Alworth is just really nice Colin Alworth is just really nice Colin Alworth is just really nice



    Moved to GXT 3 forums, as this is not a GXT 2 question.

    Can you try formatting the code? Something seems to have happened when you pasted it in, and it is very hard to read.

    At a guess, the image hasn't loaded when the page comes up, so the layout only allocates a small amount of space for it. Then, the image loads, but the layout doesn't run again.

    One option: instead of using an external file like that, use ClientBundle and ImageResource so that the app knows how big the image will be. Another option would be to set a height on the Image object so it knows how much room it needs to take up.

    Without being able to properly read this, I can't be sure, but it looks like you are making a ContentPanel as the bannerPanel and hiding the header - why bother having the panel then? You could just add the image directly into the border LC.

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