src/widgets/Slice.js
author veltr
Thu, 05 Jul 2012 19:08:13 +0200
branchnew-model
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/*
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 The Slider Widget shows time position and allows seek
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 */
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IriSP.Widgets.Slice = function(player, config) {
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    IriSP.Widgets.Widget.call(this, player, config);
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    this.sliding = false;
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};
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IriSP.Widgets.Slice.prototype = new IriSP.Widgets.Widget();
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IriSP.Widgets.Slice.prototype.defaults = {
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    start_visible : false,
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    live_update : true
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        /* Shall the bounds change each time
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        the Annotation Widget sends an update (true)
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        or only when "show" is triggered (false) ?
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        - true is to be recommended when the widget is permanently displayed.
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        */
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};
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IriSP.Widgets.Slice.prototype.draw = function() {
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    this.$slider = IriSP.jQuery('<div>')
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        .addClass("Ldt-Slice")
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    this.$.append(this.$slider);
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    this.min = 0;
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    this.max = this.source.getDuration().valueOf();
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    var _this = this,
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        _currentTime;
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    this.$slider.slider({
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        range: true,
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        values: [0, 0],
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        min: 0,
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        max: this.max,
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        change: function(event, ui) {
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            _this.player.popcorn.trigger("IriSP.Arrow.updatePosition",{
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                widget:_this.type,
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                time:Math.floor((ui.values[0]+ui.values[1])/2)
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            });
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            _this.player.popcorn.trigger("IriSP.Slice.boundsChanged",[ui.values[0], ui.values[1]]);
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        },
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        start: function() {
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            _this.sliding = true;
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            if (!_this.player.popcorn.media.paused) {
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                _this.player.popcorn.pause();
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            }
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            _currentTime = _this.player.popcorn.currentTime();
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        },
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        slide: function(event, ui) {
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            _this.player.popcorn.currentTime(ui.value / 1000);
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        },
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        stop: function() {
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            _this.sliding = false;
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            _this.player.popcorn.currentTime(_currentTime);
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        }
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    });
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    this.$slider.find(".ui-slider-handle:first").addClass("Ldt-Slice-left-handle");
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    this.$slider.find(".ui-slider-handle:last").addClass("Ldt-Slice-right-handle");
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    if (this.start_visible) {
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        this.show();
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    } else {
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        this.hide();
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    }
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    this.bindPopcorn("IriSP.Slice.show","show");
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    this.bindPopcorn("IriSP.Slice.hide","hide");
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    this.bindPopcorn("IriSP.Annotation.boundsChanged","storeBounds");
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    this.trigger("IriSP.Annotation.getBounds");
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};
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IriSP.Widgets.Slice.prototype.show = function() {
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    this.$slider.show();
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    this.player.popcorn.trigger("IriSP.Arrow.takeover",this.type);
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    this.$slider.slider("values", [this.min, this.max]);
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}
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IriSP.Widgets.Slice.prototype.hide = function() {
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    this.$slider.hide();
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    this.player.popcorn.trigger("IriSP.Arrow.release");
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}
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IriSP.Widgets.Slice.prototype.storeBounds = function(_values) {
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    if (!this.sliding && !this.player.popcorn.media.paused && (this.min != _values[0] || this.max != _values[1])) {
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        this.min = _values[0];
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        this.max = _values[1];
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        if (this.live_update) {
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            this.$slider.slider("values", [this.min, this.max]);
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        }
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    }
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}