1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 | function compose_drag_handlers( a, b ) { return { start: function( x, y ) { a.start( x, y ); b.start( x, y ); }, move: function( x, y ) { a.move( x, y ); b.move( x, y ); }, done: function() { a.done(); b.done(); }, } } |
1 2 3 4 5 6 7 8 | function prepare_swappable( o ) { swappables.push( o ); var sdp = new rectangle_drag_handler( o ); var hdp = new highlighting_drag_handler( o ); var both = compose_drag_handlers( sdp, hdp ); install_drag_handler( o, both ); } |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 | function install_mouse_handlers( target, onmouseup, onmousedown, onmousemove ) { var original_handlers = { onmouseup: target.onmouseup, onmousedown: target.onmousedown, onmousemove: target.onmousemove }; target.onmouseup = onmouseup; target.onmousedown = onmousedown; target.onmousemove = onmousemove; return { restore: function() { target.onmouseup = original_handlers.onmouseup; target.onmousedown = original_handlers.onmousedown; target.onmousemove = original_handlers.onmousemove; } }; } |
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