And probably even a base class for List/Table/Tree View classes ...
Il giorno 13/ago/2011 02:16, "DreamTangerine" <[email protected]>
ha scritto:
> I think is better to create a common base class TextComponent where
> TextInput, TextArea and TextPane are children.
>
> And I think that maybe it is useful have also these methods setText
> getText.
>
> On vie, 2011-08-12 at 17:48 -0400, Roger L. Whitcomb wrote:
>> I'm implementing Cut/Copy/Paste, etc. in our UI and it is fairly awkward
>> to have to check for TextInput, TextArea and TextPane on every operation
>> and do the casts three times for each. So, I was wondering what
>> everyone thought of a "TextOperator" interface that these three classes
>> implement that consists of the relevant methods:
>>
>>
>>
>> public void cut();
>>
>> public void copy();
>>
>> public void paste();
>>
>> public void undo();
>>
>> public void redo();
>>
>> public void clearSelection();
>>
>> public void selectAll();
>>
>> public int getSelectedLength(); // Necessary for
>> determining enabling of cut/copy
>>
>> public String getSelectedText();
>>
>>
>>
>> This way I could cut my work to 1/3 because I simply have to cast to
>> "TextOperator" and do the operations (checking for "instanceof" also).
>>
>>
>>
>> So, what does everyone think? It would be relatively trivial to
>> implement the change (add the interface file and add "implements..."
>> clause to the three classes (I think, not having prototyped it yet).
>>
>>
>>
>>
>>
>>
>>
>> Roger Whitcomb
>>
>> Architect, Engineering
>>
>> Ingres Corporation
>>
>> [email protected] <mailto:[email protected]>
>>
>>
>>
>> PHONE +1 650.587.5596
>>
>> FAX +1 650.587.5550
>>
>>
>>
>> www.ingres.com <http://www.ingres.com/>
>>
>>
>>
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>
>
