forked from Botanical/BotanJS
115 lines
2.4 KiB
JavaScript
115 lines
2.4 KiB
JavaScript
(function(){
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var ns = __namespace( "Components.Vim.Actions" );
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/** @type {System.Debug} */
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var debug = __import( "System.Debug" );
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var Mesg = __import( "Components.Vim.Message" );
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/** @type {Components.Vim.Cursor.IAction} */
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var YANK = ns[ NS_INVOKE ]( "YANK" );
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/** @type {Components.Vim.Cursor.IAction} */
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var DELETE = ns[ NS_INVOKE ]( "DELETE" );
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/** @type {Components.Vim.Cursor.IAction} */
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var VISUAL = function( Cursor )
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{
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/** @type {Components.Vim.Cursor} */
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this.__cursor = Cursor;
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this.__startaP = Cursor.aPos;
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this.__startP = { x: Cursor.X, y: Cursor.Y, p: Cursor.P };
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this.__start = Cursor.PStart;
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this.__selStart = Cursor.PStart;
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this.__msg = Mesg( "VISUAL" );
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this.__leaveMesg = "";
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Cursor.blink = false;
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Cursor.pSpace = true;
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};
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VISUAL.prototype.allowMovement = true;
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VISUAL.prototype.dispose = function()
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{
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this.__msg = this.__leaveMesg;
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this.__cursor.blink = true;
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this.__cursor.pSpace = false;
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this.__cursor.PStart = this.__selStart;
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this.__cursor.PEnd = this.__selStart + 1;
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};
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VISUAL.prototype.handler = function( e, done )
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{
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e.preventDefault();
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if( e.ModKeys ) return;
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var cur = this.__cursor;
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var Action = null;
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if( e.kMap( "y" ) )
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{
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Action = new YANK( cur );
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}
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else if( e.kMap( "d" ) )
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{
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Action = new DELETE( cur );
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}
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if( Action )
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{
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cur.suppressEvent();
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// Low-level cursor position adjustment
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// this swap the cursor direction from LTR to RTL
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// i.e. treat all delete as "e<----s" flow
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// to keep the cursor position as the top on UNDO / REDO
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if( Action.constructor == DELETE && this.__startaP < cur.aPos )
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{
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this.__startaP = cur.aPos;
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cur.X = this.__startP.x;
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cur.Y = this.__startP.y;
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cur.P = this.__startP.p;
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}
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Action.handler( e, this.__startaP );
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this.__leaveMesg = Action.getMessage();
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Action.dispose();
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cur.unsuppressEvent();
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this.__selStart = cur.PStart;
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return true;
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}
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else
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{
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var prevPos = this.__start;
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var newPos = cur.PStart;
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var posDiff = newPos - prevPos;
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if( 0 <= posDiff )
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{
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this.__selStart = newPos;
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newPos = newPos + 1;
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}
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else if( posDiff < 0 )
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{
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prevPos += posDiff;
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newPos = this.__start + 1;
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this.__selStart = prevPos;
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}
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cur.PStart = prevPos;
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cur.PEnd = newPos;
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}
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};
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VISUAL.prototype.getMessage = function()
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{
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return this.__msg;
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};
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ns[ NS_EXPORT ]( EX_CLASS, "VISUAL", VISUAL );
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})();
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