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function JSCombo(name, data) { |
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this.active = 1; |
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this.last_value = null; |
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this.debug2_lines = 10; |
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this.name = name; |
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this.myfilter = new BFilter(data); |
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this.myfilter.timeout = 0; |
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this.myfilter.parentclass = this; |
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eval("this.myfilter.result = function (arr) { var el = this.element_id('" + this.name + "'+'sel'); el.options[el.options.length] = new Option(arr[1],arr[2]); return true; }"); |
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eval("this.myfilter.clear_results = function () { var el = this.element_id('" + this.name + "' + 'sel'); this.parentclass.active = 0; el.style.display = 'none'; el.options.length = 0; el.selectedIndex = -1; return true;}"); |
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eval("this.myfilter.show_results = function () { var el_textbox = this.element_id('" + this.name + "textfilter'); var el_dropdown = this.element_id('" + this.name + "sel'); el_dropdown.style.display = ''; this.parentclass.last_value = el_textbox.value; return true;}"); |
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var el_textbox = this.myfilter.element_id(this.name + 'textfilter'); |
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el_textbox.focus(); |
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el_textbox.caretPos=1; |
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// el_textbox.select(); |
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} |
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JSCombo.prototype.debug2 = function (text) { |
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var el = this.myfilter.element_id('debug2',1); |
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if (! el) return; |
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this.debug2_lines++; |
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if (this.debug2_lines > 10) { |
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el.innerHTML = "...<br>"; |
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this.debug2_lines = 0; |
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} |
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if (el) el.innerHTML += this.debug2_lines+": "+text+"<br>"; |
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return true; |
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} |
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// keypress in dropdown |
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JSCombo.prototype.dropdown_keydown = function (event) { |
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var d = event.keyCode; |
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this.debug2("dropdown key: "+d); |
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var el_textbox = this.myfilter.element_id(this.name + 'textfilter'); |
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var el_sel = this.myfilter.element_id(this.name + 'sel'); |
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// return to textbox and hide results on |
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// enter, backspace, left, right, esc |
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if (d == 13 || d == 8 || d == 37 || d == 39 || d == 27) { |
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el_textbox.focus(); |
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this.myfilter.clear_results(); |
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// ignore backspace (to prevent back in history) |
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if (d == 8) return false; |
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if (d == 27) { |
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el_textbox.value = this.last_value; |
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} |
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} |
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// up or down on first/last element? |
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var sel = el_sel.selectedIndex; |
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var max = el_sel.options.length - 1; |
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this.debug2("selected: "+sel+" max: "+max); |
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if ( (d == 38 && sel == 0) || (d == 40 && sel == max) ) { |
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this.myfilter.clear_results(); |
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el_textbox.value = this.last_value; |
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el_textbox.focus(); |
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this.active = 0; |
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} |
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return true; |
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} |
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// keypress in textbox |
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JSCombo.prototype.textbox_keydown = function (e) { |
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var d = e.keyCode; |
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this.debug2("textbox key: "+d); |
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var el = this.myfilter.element_id(this.name + 'sel'); |
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if (! el) return false; |
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this.active = 0; |
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var el_textbox = this.myfilter.element_id(this.name + 'textfilter'); |
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var el_sel = this.myfilter.element_id(this.name + 'sel'); |
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// up, down -- go to dropdown |
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if ((d == 40)) { |
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// filter if no results |
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this.debug2("existing results: "+el_sel.options.length); |
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if (el_sel.options.length <= 0) { |
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this.myfilter.show_filter(el_textbox.value); |
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} else { |
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this.myfilter.show_results(); |
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el_sel.focus(); |
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} |
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return false; |
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} |
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// if not enter, show combo |
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if (d != 13) this.active = 1; |
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// if (this.last_value == el_textbox.value) this.active = 0; |
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// left, right -- hide dropdown |
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if ((d == 37) || (d == 39)) { |
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this.myfilter.clear_results(); |
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return false; |
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} |
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return true; |
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} |
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JSCombo.prototype.filter = function(value) { |
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this.debug2("combo filter: "+value+" ["+this.active+"]"); |
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if (! this.active) { |
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return null; |
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} |
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return this.myfilter.filter(value); |
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} |
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