Default parameters to extension functions

Pythony · January 21, 2021, 8:01am

How to pass default parameters to a extension function which have a default value?

blocks (11)
Like the cancelable parameter here

pavi2410 · January 21, 2021, 9:27am

It is not possible yet! This particular method that you have shown here has the default value hardcoded in the blocklyeditor source.

Pythony · January 21, 2021, 9:32am

Ok, thanks!

HIFI_APPS · January 21, 2021, 9:49am

I think it is possible if we use
boolean cancelable right
I could help if u share what u did still now

Pythony · January 21, 2021, 9:52am

No, it doesn't happen. I've used boolean cancelable as in the appinventor source but nothing happens.

HIFI_APPS · January 21, 2021, 9:52am

What code u have till now

Pythony · January 21, 2021, 9:54am

I think @pavi2410 is correct as in the sources also they haven't done anything different.

HIFI_APPS · January 21, 2021, 9:56am

Then fine it's just a thought

vishwas · January 21, 2021, 9:56am

Here is the code where the ShowChooseDialog block's cancelable parameter is appended a default block

github.com

mit-cml/appinventor-sources/blob/2be7a411eb44238c12455457d6f263988ae88d0d/appinventor/blocklyeditor/src/drawer.js#L602


 mutatorXMLStringFunction: function(mutatorAttributes) {
   return '' +
     '<xml>' +
     '<block type="component_method">' +
     //mutator generator
     Blockly.Drawer.mutatorAttributesToXMLString(mutatorAttributes) +
     '<value name="ARG2"><block type="logic_boolean"><title name="BOOL">TRUE</title></block></value>' +
     '</block>' +
     '</xml>';}},


// Notifer.ShowChooseDialog has cancelable default to TRUE
{matchingMutatorAttributes:{component_type:"Notifier", method_name:"ShowChooseDialog"},
 mutatorXMLStringFunction: function(mutatorAttributes) {
   return '' +
     '<xml>' +
     '<block type="component_method">' +
     //mutator generator
     Blockly.Drawer.mutatorAttributesToXMLString(mutatorAttributes) +
     '<value name="ARG4"><block type="logic_boolean"><title name="BOOL">TRUE</title></block></value>' +
     '</block>' +
     '</xml>';}},

As you can see, similar functionality cannot be achieved via an extension

Pythony · January 21, 2021, 9:57am

So it's embedded into the website only?

vishwas · January 21, 2021, 9:58am

That's correct

pavi2410 · January 21, 2021, 10:03am

I've filed a feature request here https://github.com/mit-cml/appinventor-sources/issues/2384

HIFI_APPS · January 21, 2021, 10:33am

just same word

github.com

mit-cml/appinventor-sources/blob/2be7a411eb44238c12455457d6f263988ae88d0d/appinventor/components/src/com/google/appinventor/components/runtime/Notifier.java#L214


      
           * @param button1Text the text on the left-hand button
           * @param button2Text the text on the right-hand button
           * @param cancelable indicates if additional CANCEL button should be added
           */
          @SimpleFunction(description = "Shows a dialog box with two buttons, from which the user can choose. "
              + " If cancelable is true there will be an additional CANCEL button. "
              + "Pressing a button will raise the AfterChoosing event.  The \"choice\" parameter to AfterChoosing "
              + "will be the text on the button that was pressed, or \"Cancel\" if the "
              + " CANCEL button was pressed.")
          public void ShowChooseDialog(String message, String title, final String button1Text,
              final String button2Text, boolean cancelable) {
            twoButtonDialog(activity,
                message,
                title,
                button1Text,
                button2Text,
                cancelable,
                new Runnable() {public void run() {AfterChoosing(button1Text);}},
                new Runnable() {public void run() {AfterChoosing(button2Text);}},
                new Runnable() {
                  public void run() {

the same i mentioned here

any way fine

vishwas · January 21, 2021, 11:48am

If you look at the code I linked, the default block is added if and only if the component_type is Notifier and the method_name is ShowChooseDialog.

Setting your parameter name to 'cancelable' won't do the trick, I'm afraid

HIFI_APPS · January 21, 2021, 12:00pm

i thought of different way sorry i thought qs is how to ask

system · January 28, 2021, 12:00pm

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