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rwt.remote.EventUtil.js Maven / Gradle / Ivy
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/*******************************************************************************
* Copyright (c) 2002, 2012 Innoopract Informationssysteme GmbH and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Innoopract Informationssysteme GmbH - initial API and implementation
* EclipseSource - ongoing development
******************************************************************************/
/**
* This class contains static listener functions for common events.
*/
rwt.qx.Class.define( "rwt.remote.EventUtil", {
statics : {
_suspended : false,
setSuspended : function( value ) {
this._suspended = value;
},
getSuspended : function() {
return this._suspended;
},
DOUBLE_CLICK_TIME : 500,
_capturingWidget : null,
_lastMouseDown : {
widget : null,
button : "",
x : -1,
y : -1,
mouseUpCount : 0
},
_shiftKey : false,
_ctrlKey : false,
_altKey : false,
_metaKey : false,
eventTimestamp : function() {
var init = rwt.runtime.System.getInstance();
return new Date().getTime() - init.getStartupTime();
},
widgetDefaultSelected : function( evt, target ) {
if( !rwt.remote.EventUtil.getSuspended() ) {
var server = rwt.remote.Server.getInstance();
var properties = {};
rwt.remote.EventUtil.addModifierToProperties( properties );
var remoteObject = server.getRemoteObject( target ? target : evt.getTarget() );
remoteObject.notify( "DefaultSelection", properties );
}
},
widgetSelected : function( evt ) {
var left = evt.getTarget().getLeft();
var top = evt.getTarget().getTop();
var width = evt.getTarget().getWidth();
var height = evt.getTarget().getHeight();
rwt.remote.EventUtil.notifySelected( evt.getTarget(), left, top, width, height );
},
notifySelected : function( target, left, top, width, height, detail ) {
if( !rwt.remote.EventUtil.getSuspended() ) {
var server = rwt.remote.Server.getInstance();
var properties;
if( arguments.length === 2 ) {
properties = left;
} else {
properties = {
"x" : left,
"y" : top,
"width" : width,
"height" : height,
"detail" : detail
};
}
rwt.remote.EventUtil.addModifierToProperties( properties );
server.getRemoteObject( target ).notify( "Selection", properties );
}
},
notifyDefaultSelected : function( target, left, top, width, height, detail ) {
if( !rwt.remote.EventUtil.getSuspended() ) {
var server = rwt.remote.Server.getInstance();
var properties;
if( arguments.length === 2 ) {
properties = left;
} else {
properties = {
"x" : left,
"y" : top,
"width" : width,
"height" : height,
"detail" : detail
};
}
rwt.remote.EventUtil.addModifierToProperties( properties );
server.getRemoteObject( target ).notify( "DefaultSelection", properties );
}
},
addModifierToProperties : function( properties ) {
var commandKey
= rwt.client.Client.getPlatform() === "mac" && rwt.remote.EventUtil._metaKey;
properties.shiftKey = rwt.remote.EventUtil._shiftKey;
properties.ctrlKey = rwt.remote.EventUtil._ctrlKey || commandKey;
properties.altKey = rwt.remote.EventUtil._altKey;
},
_getKeyModifier : function() {
var modifier = ""; // TODO [tb] : use real array for json protocol
var commandKey
= rwt.client.Client.getPlatform() === "mac" && rwt.remote.EventUtil._metaKey;
if( rwt.remote.EventUtil._shiftKey ) {
modifier += "shift,";
}
if( rwt.remote.EventUtil._ctrlKey || commandKey ) {
modifier += "ctrl,";
}
if( rwt.remote.EventUtil._altKey ) {
modifier += "alt,";
}
return modifier;
},
focusGained : function( evt ) {
if( !rwt.remote.EventUtil.getSuspended() ) {
var remoteObject = rwt.remote.Server.getInstance().getRemoteObject( evt.getTarget() );
remoteObject.notify( "FocusIn" );
}
},
focusLost : function( evt ) {
if( !rwt.remote.EventUtil.getSuspended() ) {
var remoteObject = rwt.remote.Server.getInstance().getRemoteObject( evt.getTarget() );
remoteObject.notify( "FocusOut" );
}
},
///////////////////////
// Mouse event handling
mouseDown : function( evt ) {
if( !rwt.remote.EventUtil.getSuspended()
&& rwt.remote.EventUtil._isRelevantMouseEvent( this, evt ) )
{
// disabled capturing as it interferes with Combo capturing
// see https://bugs.eclipse.org/bugs/show_bug.cgi?id=262171
// from now on, redirect mouse event to this widget
// this.setCapture( true );
rwt.remote.EventUtil._capturingWidget = this;
// Collect request parameters and send
rwt.remote.EventUtil._notifyMouseListeners( this, evt, "MouseDown" );
}
},
mouseUp : function( evt ) {
if( !rwt.remote.EventUtil.getSuspended()
&& rwt.remote.EventUtil._isRelevantMouseEvent( this, evt ) )
{
// disabled capturing as it interferes with Combo capturing
// see https://bugs.eclipse.org/bugs/show_bug.cgi?id=262171
// release mouse event capturing
// this.setCapture( false );
rwt.remote.EventUtil._capturingWidget = null;
// Add mouse-up request parameter
rwt.remote.EventUtil._notifyMouseListeners( this, evt, "MouseUp" );
}
},
mouseDoubleClick : function( evt ) {
if( !rwt.remote.EventUtil.getSuspended()
&& rwt.remote.EventUtil._isRelevantMouseEvent( this, evt ) )
{
// disabled capturing as it interferes with Combo capturing
// see https://bugs.eclipse.org/bugs/show_bug.cgi?id=262171
// from now on, redirect mouse event to this widget
// this.setCapture( true );
rwt.remote.EventUtil._capturingWidget = this;
// Add parameters for double-click event
if( rwt.remote.EventUtil._isDoubleClick( this, evt ) ) {
rwt.remote.EventUtil._clearLastMouseDown();
rwt.remote.EventUtil._notifyMouseListeners( this, evt, "MouseDoubleClick" );
} else {
// Store relevant data of current event to detect double-clicks
var lastMouseDown = rwt.remote.EventUtil._lastMouseDown;
lastMouseDown.widget = this;
lastMouseDown.button = evt.getButton();
lastMouseDown.x = evt.getPageX();
lastMouseDown.y = evt.getPageY();
lastMouseDown.mouseUpCount = 0;
rwt.client.Timer.once( rwt.remote.EventUtil._clearLastMouseDown,
this,
rwt.remote.EventUtil.DOUBLE_CLICK_TIME );
}
}
},
mouseUpCounter : function( evt ) {
if( !rwt.remote.EventUtil.getSuspended()
&& rwt.remote.EventUtil._isRelevantMouseEvent( this, evt ) )
{
// disabled capturing as it interferes with Combo capturing
// see https://bugs.eclipse.org/bugs/show_bug.cgi?id=262171
// release mouse event capturing
// this.setCapture( false );
rwt.remote.EventUtil._capturingWidget = null;
// increase number of mouse-up events since last stored mouse down
rwt.remote.EventUtil._lastMouseDown.mouseUpCount += 1;
}
},
/**
* Determines whether the event is relevant (i.e. should be sent) for the
* given widget.
* @param widget - the listening widget
* @param evt - the mouse event
*/
_isRelevantMouseEvent : function( widget, evt ) {
var result = true;
if( widget !== rwt.remote.EventUtil._capturingWidget
&& widget !== evt.getOriginalTarget() )
{
// find parent control and ensure that it is the same as the widget-
// parameter. Otherwise the mouse event is ignored.
var widgetManager = rwt.remote.WidgetManager.getInstance();
var target = evt.getOriginalTarget();
var control = widgetManager.findEnabledControl( target );
result = widget === control;
}
return result;
},
_clearLastMouseDown : function() {
var lastMouseDown = rwt.remote.EventUtil._lastMouseDown;
lastMouseDown.widget = null;
lastMouseDown.button = "";
lastMouseDown.mouseUpCount = 0;
lastMouseDown.x = -1;
lastMouseDown.y = -1;
},
_isDoubleClick : function( widget, evt ) {
// TODO [rh] compare last position with current position and don't
// report double-click if deviation is too big
var lastMouseDown = rwt.remote.EventUtil._lastMouseDown;
return lastMouseDown.mouseUpCount === 1
&& lastMouseDown.widget === widget
&& lastMouseDown.button === rwt.event.MouseEvent.C_BUTTON_LEFT
&& lastMouseDown.button === evt.getButton();
},
_notifyMouseListeners : function( widget, evt, eventType ) {
var button = rwt.remote.EventUtil._determineMouseButton( evt );
var modifier = rwt.remote.EventUtil._getKeyModifier();
var remoteObject = rwt.remote.Server.getInstance().getRemoteObject( widget );
var properties = {
"button" : button,
"x" : evt.getPageX(),
"y" : evt.getPageY(),
"time" : this.eventTimestamp()
};
rwt.remote.EventUtil.addModifierToProperties( properties );
remoteObject.notify( eventType, properties );
},
/**
* Returns an integer value that represents the button property from the
* given mouse event.
* 0 = unknown
* 1 = left button
* 2 = middle button
* 3 = right button
*/
_determineMouseButton : function( evt ) {
var result = 0;
switch( evt.getButton() ) {
case rwt.event.MouseEvent.C_BUTTON_LEFT:
result = 1;
break;
case rwt.event.MouseEvent.C_BUTTON_MIDDLE:
result = 2;
break;
case rwt.event.MouseEvent.C_BUTTON_RIGHT:
result = 3;
break;
}
return result;
},
helpRequested : function( evt ) {
if( evt.getKeyIdentifier() === "F1" ) {
// stop further handling and default handling by the browser
evt.stopPropagation();
evt.preventDefault();
// send help request to server
var widget = evt.getTarget();
var widgetManager = rwt.remote.WidgetManager.getInstance();
var id = widgetManager.findIdByWidget( widget );
if( id === null ) {
// find parent control for the widget that received the event in case
// it wasn't the control itself that received the event
widget = widgetManager.findControl( widget );
id = widgetManager.findIdByWidget( widget );
}
if( id != null ) {
var remoteObject = rwt.remote.Server.getInstance().getRemoteObject( widget );
remoteObject.notify( "Help" );
}
}
},
menuDetectedByKey : function( evt ) {
if( evt.getKeyIdentifier() === "Apps" ) {
// stop further handling and default handling by the browser
evt.stopPropagation();
evt.preventDefault();
var x = rwt.event.MouseEvent.getPageX();
var y = rwt.event.MouseEvent.getPageY();
rwt.remote.EventUtil.sendMenuDetected( evt.getTarget(), x, y );
}
},
menuDetectedByMouse : function( evt ) {
if( evt.getButton() === rwt.event.MouseEvent.C_BUTTON_RIGHT ) {
// stop further handling and default handling by the browser
evt.stopPropagation();
evt.preventDefault();
var x = evt.getPageX();
var y = evt.getPageY();
rwt.remote.EventUtil.sendMenuDetected( evt.getTarget(), x, y );
}
},
sendMenuDetected : function( widget, x, y ) {
if( !rwt.remote.EventUtil.getSuspended() ) {
// send menu detect request to server
var widgetManager = rwt.remote.WidgetManager.getInstance();
// find parent control for the widget that received the event in case
// it wasn't the control itself that received the event
while( widget != null && !widgetManager.isControl( widget ) ) {
widget = widget.getParent ? widget.getParent() : null;
}
var id = widgetManager.findIdByWidget( widget );
if( id != null ) {
var remoteObject = rwt.remote.Server.getInstance().getRemoteObject( widget );
remoteObject.notify( "MenuDetect", { "x" : x, "y" : y } );
}
}
}
}
} );
