improved the way we calculate the dimension of the cancel button in the audio test dialog

bigbluebutton-client/src/org/bigbluebutton/main/views/WebRTCEchoTest.mxml

@@ -100,6 +100,11 @@ with BigBlueButton; if not, see <http://www.gnu.org/licenses/>.
 				if (testState == Constants.DO_ECHO_TEST) {
 					webRTCEchoTestStarted();
 				}
+				
+				cancelButton.width = cancelButton.measureText(genCancelButtonLabel(TIMEOUT)).width
+						+ cancelButton.getStyle("paddingRight")
+						+ cancelButton.getStyle("paddingLeft")
+						+ 8; // 8 is magic number
 			}
 
 			private function startTimers():void {
@@ -115,12 +120,16 @@ with BigBlueButton; if not, see <http://www.gnu.org/licenses/>.
 				if (dotTimer.running) dotTimer.stop();
 				if (cancelTimer.running) cancelTimer.stop();
 			}
+			
+			private function genCancelButtonLabel(countdown:Number):String {
+				return cancelButtonLabel + " (" + countdown.toString() + ")";
+			}
 
 			private function timeout(e:TimerEvent):void {
 				if (countdown > 0) {
 					if (!cancelButton.visible && countdown < CANCEL_BUTTON)
 						cancelButton.visible = true;
-					cancelButton.label = cancelButtonLabel + " (" + countdown.toString() + ")";
+					cancelButton.label = genCancelButtonLabel(countdown);
 					countdown--;
 				} else {
 					noButtonClicked();
@@ -259,8 +268,7 @@ with BigBlueButton; if not, see <http://www.gnu.org/licenses/>.
 								   label="{cancelButtonLabel}" 
 								   styleName="micSettingsWindowPlaySoundButtonStyle" 
 								   click="noButtonClicked()" 
-								   toolTip="" 
-								   width="90" />
+								   toolTip="" />
 					</mx:HBox>
 				</mx:VBox>
 			</mx:AddChild>