API: dragdrop YAHOO.util.DD (YUI Library)

Class YAHOO.util.DD - extends YAHOO.util.DragDrop

Known Subclasses:: YAHOO.widget.SliderThumb YAHOO.util.DDProxy

A DragDrop implementation where the linked element follows the mouse cursor during a drag.

Constructor

YAHOO.util.DD

Parameters:: id <String> the id of the linked element; sGroup <String> the group of related DragDrop items; config <object> an object containing configurable attributes Valid properties for DD: scroll

Properties

scroll `- boolean`

When set to true, the utility automatically tries to scroll the browser window wehn a drag and drop element is dragged near the viewport boundary. Defaults to true.

Properties inherited from YAHOO.util.DragDrop:


                                    
                                        __ygDragDrop,
                                        _domRef,
                                        available,
                                        config,
                                        constrainX,
                                        constrainY,
                                        dragElId,
                                        groups,
                                        handleElId,
                                        hasOuterHandles,
                                        id,
                                        invalidHandleClasses,
                                        invalidHandleIds,
                                        invalidHandleTypes,
                                        locked,
                                        maintainOffset,
                                        maxX,
                                        maxY,
                                        minX,
                                        minY,
                                        primaryButtonOnly,
                                        startPageX,
                                        startPageY,
                                        xTicks,
                                        yTicks

Methods

alignElWithMouse


                                        
                                        
                                        
                                        void
                                            alignElWithMouse
                                           (
                                                
                                                        
                                                         el
                                                    
                                                
                                                        , 
                                                         iPageX
                                                    
                                                
                                                        , 
                                                         iPageY
                                                    
                                                
                                            )

Sets the element to the location of the mousedown or click event, maintaining the cursor location relative to the location on the element that was clicked. Override this if you want to place the element in a location other than where the cursor is.

Parameters:: el <HTMLElement> the element to move; iPageX <int> the X coordinate of the mousedown or drag event; iPageY <int> the Y coordinate of the mousedown or drag event

Returns: void

autoOffset

Sets the pointer offset to the distance between the linked element's top left corner and the location the element was clicked

Parameters:: iPageX <int> the X coordinate of the click; iPageY <int> the Y coordinate of the click

Returns: void

autoScroll

Auto-scroll the window if the dragged object has been moved beyond the visible window boundary.

Parameters:: x <int> the drag element's x position; y <int> the drag element's y position; h <int> the height of the drag element; w <int> the width of the drag element

Returns: void

cachePosition


                                        
                                        
                                        
                                        void
                                            cachePosition
                                           (
                                                
                                                        
                                                         iPageX
                                                    
                                                
                                                        , 
                                                         iPageY
                                                    
                                                
                                            )

Saves the most recent position so that we can reset the constraints and tick marks on-demand. We need to know this so that we can calculate the number of pixels the element is offset from its original position.

Parameters:: iPageX <object> the current x position (optional, this just makes it so we don't have to look it up again); iPageY <object> the current y position (optional, this just makes it so we don't have to look it up again)

Returns: void

getTargetCoord


                                         private 
                                        
                                        
                                        void
                                            getTargetCoord
                                           (
                                                
                                                        
                                                         iPageX
                                                    
                                                
                                                        , 
                                                         iPageY
                                                    
                                                
                                            )

Finds the location the element should be placed if we want to move it to where the mouse location less the click offset would place us.

Parameters:: iPageX <int> the X coordinate of the click; iPageY <int> the Y coordinate of the click

Returns: void: an object that contains the coordinates (Object.x and Object.y)

setDelta

Sets the pointer offset. You can call this directly to force the offset to be in a particular location (e.g., pass in 0,0 to set it to the center of the object, as done in YAHOO.widget.Slider)

Parameters:: iDeltaX <int> the distance from the left; iDeltaY <int> the distance from the top

Returns: void

setDragElPos


                                        
                                        
                                        
                                        void
                                            setDragElPos
                                           (
                                                
                                                        
                                                         iPageX
                                                    
                                                
                                                        , 
                                                         iPageY
                                                    
                                                
                                            )

Sets the drag element to the location of the mousedown or click event, maintaining the cursor location relative to the location on the element that was clicked. Override this if you want to place the element in a location other than where the cursor is.

Parameters:: iPageX <int> the X coordinate of the mousedown or drag event; iPageY <int> the Y coordinate of the mousedown or drag event

Returns: void

Methods inherited from YAHOO.util.DragDrop:


                                        
                                            addInvalidHandleClass,
                                            addInvalidHandleId,
                                            addInvalidHandleType,
                                            addToGroup,
                                            applyConfig,
                                            b4Drag,
                                            b4DragDrop,
                                            b4DragOut,
                                            b4DragOver,
                                            b4EndDrag,
                                            b4MouseDown,
                                            b4StartDrag,
                                            clearConstraints,
                                            clearTicks,
                                            endDrag,
                                            getDragEl,
                                            getEl,
                                            getTick,
                                            handleMouseDown,
                                            handleOnAvailable,
                                            init,
                                            initTarget,
                                            isLocked,
                                            isTarget,
                                            isValidHandleChild,
                                            lock,
                                            onAvailable,
                                            onDrag,
                                            onDragDrop,
                                            onDragEnter,
                                            onDragOut,
                                            onDragOver,
                                            onInvalidDrop,
                                            onMouseDown,
                                            onMouseUp,
                                            padding,
                                            removeFromGroup,
                                            removeInvalidHandleClass,
                                            removeInvalidHandleId,
                                            removeInvalidHandleType,
                                            resetConstraints,
                                            setDragElId,
                                            setHandleElId,
                                            setInitialPosition,
                                            setOuterHandleElId,
                                            setPadding,
                                            setStartPosition,
                                            setXConstraint,
                                            setXTicks,
                                            setYConstraint,
                                            setYTicks,
                                            startDrag,
                                            toString,
                                            unlock,
                                            unreg

Yahoo! UI Library

Drag and Drop

Class YAHOO.util.DD - extends YAHOO.util.DragDrop

scroll - boolean

Properties inherited from YAHOO.util.DragDrop:

Methods inherited from YAHOO.util.DragDrop:

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scroll `- boolean`