please ignore this topic !! seems it is published by wrong operation before I finished editing it . sorry for that!!
On Nov 28, 10:48 am, Bruce Zu <bruce...@sonyericsson.com> wrote: > background: > there is a variable : " NpTextBox createTxt " > there is a button, by default thisButton.setEnabled(false). > > what logic I want : > when user put something into createTxt. I will " > thisButton.setEnabled(true)." > > user may type or middle click the mouse to paste something into > createTxt. > > my question is : > > what event type I should handle to implement my logic especially > when user middle click mouse : > > I do some test as below : > > I add 4 handlers of 'Click', 'MouseDown', 'MouseUp', and 'MouseOver' > event . > > I add System.out.println(). on some lines for test and got below > output .(because > eclipse beakpoints on these lines in GWT debug mode not always work.) > > I copy a string "projectname" then I move my mouse to the createTxt on > the Web UI page and click middle button of mouse twice and find output > as below . > > ... > -----------MouseOver-------------- > ----------createTxt.getAbsoluteLeft(): [0]------------- > ----------createTxt.getValue(): []------------- > ----------createTxt.getText(): []------------- > -----------MouseDown-------------- > ----------createTxt.getAbsoluteLeft(): [0]------------- > ----------createTxt.getValue(): []------------- > ----------createTxt.getText(): []------------- > -----------MouseUp-------------- > ----------createTxt.getAbsoluteLeft(): [0]------------- > ----------createTxt.getValue(): []------------- > ----------createTxt.getText(): []------------- > -----------MouseClick-------------- > ----------createTxt.getAbsoluteLeft(): [0]------------- > ----------createTxt.getValue(): []------------- > ----------createTxt.getText(): []------------- > > [ reminder : here is the place that fist click is done ] > > -----------MouseDown-------------- > ----------createTxt.getAbsoluteLeft(): [22]------------- > ----------createTxt.getValue(): [projectnameprojectname]------------- > ----------createTxt.getText(): [projectnameprojectname]------------- > -----------MouseUp-------------- > ----------createTxt.getAbsoluteLeft(): [22]------------- > ----------createTxt.getValue(): [projectnameprojectname]------------- > ----------createTxt.getText(): [projectnameprojectname]------------- > -----------MouseClick-------------- > ----------createTxt.getAbsoluteLeft(): [22]------------- > ----------createTxt.getValue(): [projectnameprojectname]------------- > ----------createTxt.getText(): [projectnameprojectname]------------- > .... > > we can see after first click on mouse middle button the > createTxt.getText() will return empty string. > > Gwt > from the second click it will work. > seems the 'Click', 'MouseDown', 'MouseUp', and 'MouseOver' events are > handler before GWT set value to ' createTxt' . > > question 1> : which even should I monitor and which handler should > I add to createTxt so that I can catch the content after the first > click here ? > > question 2> if user right click mouse , OS (here I use Ubuntu) > will feedback a menu with a option 'paste' , now if user click this > option . GWT Web UI can not catch this click event, but this event can > be catch > by OS. I do not know if we should catch this event. > > and take different browser , OS ...into account. > > so I want to know if we must have this function . or can we do this in > the same way of "Create Branch" --The button is never disabled and the > string checking can be done on button click event. > > I think it will be much easier than make a check for all the events. I > am not clear > the background about why we need disabling the button . I think > handling all this > events is not necessary except that you really expect to this way. > > thanks in advance!! > > //Bruce -- You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
