The page I am working on has a javascript function executed to print parts of the page. For some reason, printing in Safari, causes the window to somehow update. I say somehow, because it does not really refresh as in reload the page, but rather it starts the "rendering" of the page from start, i.e. scroll to top, flash animations start from 0, and so forth. The effect is reproduced by this fiddle: http://jsfiddle.net/fYmnB/ Clicking the print button and finishing or cancelling a print in Safari causes the screen to "go white" for a sec, which in my real website manifests itself as something "like" a reload. While running print button with, let's say, Firefox, just opens and closes the print dialogue without affecting the fiddle page in any way. Is there something with my way of calling the browsers print method that causes this, or how can it be explained - and preferably, avoided? P.S.: On my real site the same occurs with Chrome. In the ex
You can use Character.isLetter(char) on TextBox's KeyUpHandler:
ReplyDeletetextBox.addKeyUpHandler(new KeyUpHandler() {
public void onKeyUp(KeyUpEvent event) {
if (!Character.isLetter(event.getNativeKeyCode())) {
((TextBox)event.getSource()).cancelKey();
customPopup.showRelativeTo(textBox);// your styled PopupPanel
}
}
});
But, Character.isLetter(char) works with ASCII, if you want more see you can do it something like that:
/**
* A better implementation of isLetter -- the default GWT version doesn't support non-English characters.
*
* @param c the character to check
* @return whether the character represents and alphabetic symbol.
*/
public static boolean isLetter(char c) {
int val = (int) c;
return inRange(val, 65, 90) || inRange(val, 97, 122) || inRange(val, 192, 687) || inRange(val, 900, 1159) ||
inRange(val, 1162, 1315) || inRange(val, 1329, 1366) || inRange(val, 1377, 1415) || inRange(val, 1425, 1610);
}
/**
* Checks if an int value is in a range.
* @param value value to check
* @param min min value
* @param max max value
* @return whether value is in the range, inclusively.
*/
public static boolean inRange(int value, int min, int max) {
return (value <= max) & (value >= min);
}
See this: http://code.google.com/p/google-web-toolkit/issues/detail?id=1983
You can write some validation code on keyTyped event to check, what was the last letter typed. Was it a number or not. If not then show error message.
ReplyDeleteTry considering KeyLister method : keyTyped()
You may add regex to do this
ReplyDeleteJavascript to allow Alphabetical characters
ReplyDeletefunction AllowAlphabet(e)
{
keyEntry = !isIE ? e.which : event.keyCode;
if (((keyEntry >= '65') && (keyEntry <= '90')) || ((keyEntry >= '97') && (keyEntry <=
'122')) || (keyEntry == '46') || (keyEntry == '32') || keyEntry == '45')
return true;
}