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70 lines
1.5 KiB
70 lines
1.5 KiB
enyo.kind({
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name: "enyo.AlphaJumper",
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classes: "enyo-alpha-jumper enyo-border-box",
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published: {
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marker: null
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},
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events: {
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onAlphaJump: ""
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},
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handlers: {
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ondown: "down",
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onmove: "move",
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onup: "up"
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},
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initComponents: function() {
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for (var s="A".charCodeAt(0), i=s; i<s+26; i++) {
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this.createComponent({content: String.fromCharCode(i)});
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}
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this.inherited(arguments);
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},
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down: function(inSender, inEvent) {
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if (this.tracking) {
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enyo.dispatcher.release();
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}
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this.tracking = true;
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if (this.hasNode()) {
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var b = this.node.getBoundingClientRect();
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// IE8 does not return width
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var w = (b.width === undefined) ? (b.right - b.left) : b.width;
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this.x = b.left + w/2;
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}
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enyo.dispatcher.capture(this);
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this.track(inEvent);
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},
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move: function(inSender, inEvent) {
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if (this.tracking) {
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this.track(inEvent);
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}
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},
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up: function() {
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if (this.tracking) {
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enyo.dispatcher.release();
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this.setMarker(null);
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this.tracking = false;
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}
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},
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track: function(inEvent) {
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var n = document.elementFromPoint(this.x, inEvent.pageY);
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var c = this.nodeToControl(n);
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if (c) {
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this.setMarker(c);
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}
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},
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nodeToControl: function(inNode) {
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for (var i=0, c$=this.controls, c; c=c$[i]; i++) {
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if (inNode == c.hasNode()) {
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return c;
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}
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}
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},
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markerChanged: function(inLast) {
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if (inLast) {
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inLast.removeClass("active");
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}
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if (this.marker) {
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this.marker.addClass("active");
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this.doAlphaJump({letter: this.marker.getContent(), index: this.marker.indexInContainer()});
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}
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}
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});
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