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// This Source Code is in the Public Domain per: http://unlicense.org |
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package org.litesoft.GWT.client.widgets.nonpublic.external; |
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import com.google.gwt.user.client.*; |
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import com.google.gwt.user.client.ui.*; |
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/** |
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* A controller which interprets drag events and delegates the mouse drag |
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* operation to a delegate. |
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* <p/> |
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* see asquare.gwt.tk.client.ui.behavior.DragGesture |
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*/ |
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public class DragController extends MouseController { |
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private MouseEvent m_previousEvent; |
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/** |
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* Creates a new DragController which delegates to the specified |
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* handler. |
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* |
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* @param handler a delegate object, or <code>null</code> |
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*/ |
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public DragController( MouseHandler handler ) { |
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super( Event.ONMOUSEDOWN | Event.ONMOUSEMOVE | Event.ONMOUSEUP | Event.ONLOSECAPTURE, DragController.class, handler ); |
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} |
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@Override |
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public void onBrowserEvent( Widget widget, Event event ) { |
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super.onBrowserEvent( widget, event ); |
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if ( DOM.eventGetType( event ) == Event.ONLOSECAPTURE ) { |
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/* |
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* Firefox loses the mouseup if released outside the client area. |
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* But we do get an onlosecapture event. Not ideal, but it prevents |
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* a invalid state (dragging while mouse is released). |
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* http://code.google.com/p/google-web-toolkit/issues/detail?id=243 |
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*/ |
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onMouseUp( m_previousEvent ); |
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} |
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} |
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@Override |
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protected void onMouseDown( MouseEvent e ) { |
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DOM.setCapture( e.getReceiver().getElement() ); |
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m_previousEvent = e; |
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super.onMouseDown( e ); |
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} |
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@Override |
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protected void onMouseMove( MouseEvent e ) { |
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m_previousEvent = e; |
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super.onMouseMove( e ); |
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} |
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|
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@Override |
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protected void onMouseUp( MouseEvent e ) { |
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if ( m_previousEvent != null ) { |
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// do last to prevent reentrancy via ONLOSECAPTURE |
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DOM.releaseCapture( e.getReceiver().getElement() ); |
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} |
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super.onMouseUp( e ); |
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m_previousEvent = null; |
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} |
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} |
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// This Source Code is in the Public Domain per: http://unlicense.org |
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package org.litesoft.GWT.client.widgets.nonpublic.external; |
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import com.google.gwt.user.client.*; |
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import com.google.gwt.user.client.ui.*; |
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|
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/** |
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* A controller which interprets drag events and delegates the mouse drag |
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* operation to a delegate. |
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* <p/> |
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* see asquare.gwt.tk.client.ui.behavior.DragGesture |
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*/ |
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public class DragController extends MouseController { |
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private MouseEvent m_previousEvent; |
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|
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/** |
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* Creates a new DragController which delegates to the specified |
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* handler. |
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* |
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* @param handler a delegate object, or <code>null</code> |
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*/ |
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public DragController( MouseHandler handler ) { |
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super( Event.ONMOUSEDOWN | Event.ONMOUSEMOVE | Event.ONMOUSEUP | Event.ONLOSECAPTURE, DragController.class, handler ); |
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} |
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|
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@Override |
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public void onBrowserEvent( Widget widget, Event event ) { |
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super.onBrowserEvent( widget, event ); |
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if ( DOM.eventGetType( event ) == Event.ONLOSECAPTURE ) { |
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/* |
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* Firefox loses the mouseup if released outside the client area. |
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* But we do get an onlosecapture event. Not ideal, but it prevents |
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33 |
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* a invalid state (dragging while mouse is released). |
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* http://code.google.com/p/google-web-toolkit/issues/detail?id=243 |
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*/ |
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onMouseUp( m_previousEvent ); |
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} |
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} |
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|
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@Override |
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protected void onMouseDown( MouseEvent e ) { |
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DOM.setCapture( e.getReceiver().getElement() ); |
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m_previousEvent = e; |
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super.onMouseDown( e ); |
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} |
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|
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@Override |
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protected void onMouseMove( MouseEvent e ) { |
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m_previousEvent = e; |
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super.onMouseMove( e ); |
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} |
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|
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@Override |
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protected void onMouseUp( MouseEvent e ) { |
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if ( m_previousEvent != null ) { |
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// do last to prevent reentrancy via ONLOSECAPTURE |
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DOM.releaseCapture( e.getReceiver().getElement() ); |
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} |
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super.onMouseUp( e ); |
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m_previousEvent = null; |
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} |
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} |
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