Class: BlockDragger

Blockly.BlockDragger

class   static

Constructor

BlockDragger

new BlockDragger(block, workspace)

Class for a block dragger. It moves blocks around the workspace when they are being dragged by a mouse or touch.

Parameter
block	Blockly.BlockSvg The block to drag. Value must not be null.
workspace	Blockly.WorkspaceSvg The workspace to drag on. Value must not be null.

Methods

dispose

package

dispose()

Sever all links from this object.

dragBlock

package

dragBlock(e, currentDragDeltaXY)

Execute a step of block dragging, based on the given event. Update the display accordingly.

Parameter
e	Event The most recent move event. Value must not be null.
currentDragDeltaXY	Blockly.utils.Coordinate How far the pointer has moved from the position at the start of the drag, in pixel units. Value must not be null.

endBlockDrag

package

endBlockDrag(e, currentDragDeltaXY)

Finish a block drag and put the block back on the workspace.

Parameter
e	Event The mouseup/touchend event. Value must not be null.
currentDragDeltaXY	Blockly.utils.Coordinate How far the pointer has moved from the position at the start of the drag, in pixel units. Value must not be null.

getInsertionMarkers

package

getInsertionMarkers() returns Array of non-null Blockly.BlockSvg

Get a list of the insertion markers that currently exist. Drags have 0, 1, or 2 insertion markers.

Returns

non-null Array of non-null Blockly.BlockSvg A possibly empty list of insertion marker blocks.

startBlockDrag

package

startBlockDrag(currentDragDeltaXY, healStack)

Start dragging a block. This includes moving it to the drag surface.

Parameter
currentDragDeltaXY	Blockly.utils.Coordinate How far the pointer has moved from the position at mouse down, in pixel units. Value must not be null.
healStack	boolean Whether or not to heal the stack after disconnecting.