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POForce ContentPanel to relayout its components
 

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  1. POForce ContentPanel to relayout its components
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    <p>I implemented a Horizontal splittable panel with a BorderLayoutContainer and 2 ContentPanel:</p> <pre><code>-------------------------------------------------- | ContentPanel 1 | ContentPanel2 | | | | | component 1 - component 2 | | | &lt;-|-&gt; | | | | | | | -------------------------------------------------- </code></pre> <p>With this code :</p> <pre><code>public class WestCenter extends BorderLayoutContainer { private ContentPanel westPanel; private ContentPanel centerPanel; public WestCenter(){ westPanel = new ContentPanel(); centerPanel = new ContentPanel(); BorderLayoutData westData=new BorderLayoutData(800); westData.setSplit(true); westData.setCollapsible(true); westData.setMinSize(300); westData.setMaxSize(2000); westData.setMargins(new Margins(0,5,0,0)); BorderLayoutData centerData=new BorderLayoutData(); setWestWidget(westPanel, westData); setCenterWidget(centerPanel,centerData); } ... //Getters, Setters etc... </code></pre> <p>}</p> <p><strong>Problem :</strong> </p> <p>When the user drags the bar so that "component 1" and "component 2" cannot fit in the same line anymore, there is some problems in the height calculation, resulting in a bad display.</p> <pre><code>-------------------------------------------------- | ContentPanel 1 | ContentPanel2 | | | | | component 1 | | | component 2 &lt;-|-&gt; | | | | | *bad display for | | | compos here* | | -------------------------------------------------- </code></pre> <p><strong>But</strong></p> <p>If I manually redrag by 1px, the display is good again (even with "component 1" and "component 2" on 2 lines).</p> <p><strong>Question</strong></p> <p>How can I force the ContentPanel to redisplay its content?</p> <p>Up to now, the only way I found is (very) ugly: add a resize handler on the contentPanel to set the width to width-1. </p> <p>The problem is that this handler generates another resize event, resulting in an infinite loop. But with the help of a Timer, I validated that the display problem was solved by this change of width :</p> <pre><code>westPanel.addResizeHandler(new ResizeHandler() { @Override public void onResize(final ResizeEvent event) { Timer t=new Timer(){ @Override public void run() { westPanel.setWidth(westPanel.getOffsetWidth()-1); } }; t.schedule(2000); } }); </code></pre> <p>Any ideas?</p>
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    1. USArnaud Denoyelle
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    1. COwhy you didn't used viewport??may be it will help you.
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      1. POForce ContentPanel to relayout its components
      1. USDivyesh Rupawala
    2. COI dit not know the existence of this class so I read the documentation about it. The doc explains that you have to create one ViewPort and add it to the RootPanel. The problem is that I use GWTP and revealPlace() methods so I never directly access to the RootPanel(). Do you know how to mix GXT ViewPort with GWTP?
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      1. POForce ContentPanel to relayout its components
      1. USArnaud Denoyelle
    3. COContentPanel.layout(true)?
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      1. POForce ContentPanel to relayout its components
      1. USBaurzhan
 

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