On 6/20/07, TiNo <[EMAIL PROTECTED]> wrote:
>
> With the following code (shortend):
> --------------------------------------------------------------------------
> var EditGrid = function (base_url, target_id) {
> bindMethods(this);
> this.base_url = base_url;
> this.target_id = target_id;
> this.editing = false;
> this.direction = 6; //forward, see your numpad
> this.editcell = null;
>
> this.render();
> }
>
> EditGrid.prototype = {
>
> render : function(params) {
> params = params || {};
> params = eval(params);
> params['tg_random'] = new Date().getTime();
> params['tg_format'] = "json";
> var d = loadJSONDoc(this.base_url + '/get_data', params);
> d.addCallback(this.createGrid);
> return d;
> },
>
> createGrid : function(response) {
> var grid = Widget.editgrid.render(this.target_id, response);
> swapDOM(this.target_id, grid);
> connect(window,'onkeydown',this.handleKey);
> },
>
> editCell : function(e) {
> [...]
> },
>
> handleKey : function(e) {
> [...]
> if(e.key()['string'] == 'KEY_ESCAPE')
> {
> this.abort()
> e.stop()
> }
> [...]
> },
>
> abort : function(e){
> var editcell = this.editcell;
> if(!this.editing) return;
>
> swapDOM(editcell.firstChild,document.createTextNode(this.original));
> this.editing = false;
> this.original = null;
> this.editcell = null;
> if(e)e.stop();
>
> }
> [etc...]
> }
> -----------------------------------------------------------------------------
>
> I have the following problem: the 'this' variable is overwritten by
> the EditGrid function every time one of its methods is called.
> Example: editCell is called on onclick on a tablecell, it thereby sets
> this.editcell to the target cell, and this.editing to true. But when
> the handleKey method is called by a onkeydown, this.editing is set to
> false, and this.editcell to null, like the values they had initially.
>
> What am I doing wrong?
There was a bug in connect that interfered with bind(). You can either
upgrade to the latest svn trunk, or change this:
connect(window,'onkeydown',this.handleKey);
to this:
connect(window,'onkeydown',this, 'handleKey');
-bob
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