On 2012-11-02, at 3:02 PM, Miguel Torres wrote:
> Hi List,
>
> I am creating a Component to use <button > HTML tag in my apps.
>
> I am implementing Bootstrap in my WO application and I want to create buttons
> with icons.
>
> I followed the example in the book Practical WebObjects, chapter 6 that
> creates a Hyperlink Component.
>
> This is my code based on the book's example:
>
> public class BootstrapSubmitButton extends ERXComponent {
> public BootstrapSubmitButton(WOContext context) {
> super(context);
> }
>
> @Override
> public void appendToResponse(WOResponse response, WOContext context) {
> String tabindex = stringValueForBinding("tabindex");
> String cssClass = "btn "+stringValueForBinding("class", "");
> String icon = stringValueForBinding("icon");
>
> response.appendContentString("<button
> name=\""+context.elementID()+"\"");
> if(tabindex != null){
> response.appendContentString("tabindex=\""+tabindex+"\" ");
> }
> response.appendContentString("class=\""+cssClass+"\"
> type=\"submit\">");
> if(icon != null){
> response.appendContentString("<i
> class=\""+stringValueForBinding("icon")+"\" > </i> ");
> }
> response.appendContentString(stringValueForBinding("value"));
> response.appendContentString("</button>");
> }
>
> @Override
> public boolean synchronizesVariablesWithBindings() {
> return false;
> }
>
> @Override
> public WOActionResults invokeAction(WORequest request, WOContext context)
> {
> if(context.elementID().startsWith(context.senderID())){
> return (WOActionResults)valueForBinding("action");
> }
> return null;
> }
> }
>
>
> I just changed a line:
>
>
> if(context.elementID().startsWith(context.senderID())){
>
>
>
> The example in the book is coded like this:
> if(context.elementID().equals(context.senderID())){
>
>
> I had to changed it because it was not working, debugging the code I found
> that the element's ID is never equals to the sender's ID. It sounds logic
> because they are two different objects.
Why are they different objects? Look at the page content, what matches the
senderID()? Your code is saying "if the action is from me, or from any of my
children". Is there something else embedded in your button?
> I think my change is correct.
>
> Am I right and that's an error in the book's example?
>
> Did I misunderstand the concepts in the book and I am doing something
> dangerous for my application?
I am pretty sure the book is correct, I don't understand why you are seeing the
results that you are seeing.
Chuck
--
Chuck Hill Senior Consultant / VP Development
Practical WebObjects - for developers who want to increase their overall
knowledge of WebObjects or who are trying to solve specific problems.
http://www.global-village.net/gvc/practical_webobjects
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