progressbar.js

初学者

/*
	Copyright (c) 2004-2006, The Dojo Foundation
	All Rights Reserved.

	Licensed under the Academic Free License version 2.1 or above OR the
	modified BSD license. For more information on Dojo licensing, see:

		http://dojotoolkit.org/community/licensing.shtml
*/



dojo.provide("dojo.widget.ProgressBar");
dojo.require("dojo.widget.*");
dojo.require("dojo.event");
dojo.require("dojo.dom");
dojo.require("dojo.html.style");
dojo.require("dojo.string.*");
dojo.require("dojo.lfx.*");
dojo.widget.defineWidget("dojo.widget.ProgressBar", dojo.widget.HtmlWidget, {progressValue:0, maxProgressValue:100, width:300, height:30, frontPercentClass:"frontPercent", backPercentClass:"backPercent", frontBarClass:"frontBar", backBarClass:"backBar", hasText:false, isVertical:false, showOnlyIntegers:false, dataSource:"", pollInterval:3000, duration:1000, templateString:"<div dojoAttachPoint=\"containerNode\" style=\"position:relative;overflow:hidden\">\n\t<div style=\"position:absolute;display:none;width:100%;text-align:center\" dojoAttachPoint=\"backPercentLabel\" class=\"dojoBackPercentLabel\"></div>\n\t<div style=\"position:absolute;overflow:hidden;width:100%;height:100%\" dojoAttachPoint=\"internalProgress\">\n\t<div style=\"position:absolute;display:none;width:100%;text-align:center\" dojoAttachPoint=\"frontPercentLabel\" class=\"dojoFrontPercentLabel\"></div></div>\n</div>\n", templateCssString:".backBar{\n\tborder:1px solid #84a3d1;\n}\n.frontBar{\n\tbackground:url(\"images/bar.gif\") repeat bottom left;\n\tbackground-attachment: fixed;\n}\n.h-frontBar{\n\tbackground:url(\"images/h-bar.gif\") repeat bottom left;\n\tbackground-attachment: fixed;\n}\n.simpleFrontBar{\n\tbackground: red;\n}\n.frontPercent,.backPercent{\n\tfont:bold 13px helvetica;\n}\n.backPercent{\n\tcolor:#293a4b;\n}\n.frontPercent{\n\tcolor:#fff;\n}\n", templateCssPath:dojo.uri.moduleUri("dojo.widget", "templates/ProgressBar.css"), containerNode:null, internalProgress:null, _pixelUnitRatio:0, _pixelPercentRatio:0, _unitPercentRatio:0, _unitPixelRatio:0, _floatDimension:0, _intDimension:0, _progressPercentValue:"0%", _floatMaxProgressValue:0, _dimension:"width", _pixelValue:0, _oInterval:null, _animation:null, _animationStopped:true, _progressValueBak:false, _hasTextBak:false, fillInTemplate:function (args, frag) {
	this.internalProgress.className = this.frontBarClass;
	this.containerNode.className = this.backBarClass;
	if (this.isVertical) {
		this.internalProgress.style.bottom = "0px";
		this.internalProgress.style.left = "0px";
		this._dimension = "height";
	} else {
		this.internalProgress.style.top = "0px";
		this.internalProgress.style.left = "0px";
		this._dimension = "width";
	}
	this.frontPercentLabel.className = this.frontPercentClass;
	this.backPercentLabel.className = this.backPercentClass;
	this.progressValue = "" + this.progressValue;
	this.domNode.style.height = this.height + "px";
	this.domNode.style.width = this.width + "px";
	this._intDimension = parseInt("0" + eval("this." + this._dimension));
	this._floatDimension = parseFloat("0" + eval("this." + this._dimension));
	this._pixelPercentRatio = this._floatDimension / 100;
	this.setMaxProgressValue(this.maxProgressValue, true);
	this.setProgressValue(dojo.string.trim(this.progressValue), true);
	dojo.debug("float dimension: " + this._floatDimension);
	dojo.debug("this._unitPixelRatio: " + this._unitPixelRatio);
	this.showText(this.hasText);
}, showText:function (visible) {
	if (visible) {
		this.backPercentLabel.style.display = "block";
		this.frontPercentLabel.style.display = "block";
	} else {
		this.backPercentLabel.style.display = "none";
		this.frontPercentLabel.style.display = "none";
	}
	this.hasText = visible;
}, postCreate:function (args, frag) {
	this.render();
}, _backupValues:function () {
	this._progressValueBak = this.progressValue;
	this._hasTextBak = this.hasText;
}, _restoreValues:function () {
	this.setProgressValue(this._progressValueBak);
	this.showText(this._hasTextBak);
}, _setupAnimation:function () {
	var _self = this;
	dojo.debug("internalProgress width: " + this.internalProgress.style.width);
	this._animation = dojo.lfx.html.slideTo(this.internalProgress, {top:0, left:parseInt(this.width) - parseInt(this.internalProgress.style.width)}, parseInt(this.duration), null, function () {
		var _backAnim = dojo.lfx.html.slideTo(_self.internalProgress, {top:0, left:0}, parseInt(_self.duration));
		dojo.event.connect(_backAnim, "onEnd", function () {
			if (!_self._animationStopped) {
				_self._animation.play();
			}
		});
		if (!_self._animationStopped) {
			_backAnim.play();
		}
		_backAnim = null;
	});
}, getMaxProgressValue:function () {
	return this.maxProgressValue;
}, setMaxProgressValue:function (maxValue, noRender) {
	if (!this._animationStopped) {
		return;
	}
	this.maxProgressValue = maxValue;
	this._floatMaxProgressValue = parseFloat("0" + this.maxProgressValue);
	this._pixelUnitRatio = this._floatDimension / this.maxProgressValue;
	this._unitPercentRatio = this._floatMaxProgressValue / 100;
	this._unitPixelRatio = this._floatMaxProgressValue / this._floatDimension;
	this.setProgressValue(this.progressValue, true);
	if (!noRender) {
		this.render();
	}
}, setProgressValue:function (value, noRender) {
	if (!this._animationStopped) {
		return;
	}
	this._progressPercentValue = "0%";
	var _value = dojo.string.trim("" + value);
	var _floatValue = parseFloat("0" + _value);
	var _intValue = parseInt("0" + _value);
	var _pixelValue = 0;
	if (dojo.string.endsWith(_value, "%", false)) {
		this._progressPercentValue = Math.min(_floatValue.toFixed(1), 100) + "%";
		_value = Math.min((_floatValue) * this._unitPercentRatio, this.maxProgressValue);
		_pixelValue = Math.min((_floatValue) * this._pixelPercentRatio, eval("this." + this._dimension));
	} else {
		this.progressValue = Math.min(_floatValue, this.maxProgressValue);
		this._progressPercentValue = Math.min((_floatValue / this._unitPercentRatio).toFixed(1), 100) + "%";
		_pixelValue = Math.min(_floatValue / this._unitPixelRatio, eval("this." + this._dimension));
	}
	this.progressValue = dojo.string.trim(_value);
	this._pixelValue = _pixelValue;
	if (!noRender) {
		this.render();
	}
}, getProgressValue:function () {
	return this.progressValue;
}, getProgressPercentValue:function () {
	return this._progressPercentValue;
}, setDataSource:function (dataSource) {
	this.dataSource = dataSource;
}, setPollInterval:function (pollInterval) {
	this.pollInterval = pollInterval;
}, start:function () {
	var _showFunction = dojo.lang.hitch(this, this._showRemoteProgress);
	this._oInterval = setInterval(_showFunction, this.pollInterval);
}, startAnimation:function () {
	if (this._animationStopped) {
		this._backupValues();
		this.setProgressValue("10%");
		this._animationStopped = false;
		this._setupAnimation();
		this.showText(false);
		this.internalProgress.style.height = "105%";
		this._animation.play();
	}
}, stopAnimation:function () {
	if (this._animation) {
		this._animationStopped = true;
		this._animation.stop();
		this.internalProgress.style.height = "100%";
		this.internalProgress.style.left = "0px";
		this._restoreValues();
		this._setLabelPosition();
	}
}, _showRemoteProgress:function () {
	var _self = this;
	if ((this.getMaxProgressValue() == this.getProgressValue()) && this._oInterval) {
		clearInterval(this._oInterval);
		this._oInterval = null;
		this.setProgressValue("100%");
		return;
	}
	var bArgs = {url:_self.dataSource, method:"POST", mimetype:"text/json", error:function (type, errorObj) {
		dojo.debug("[ProgressBar] showRemoteProgress error");
	}, load:function (type, data, evt) {
		_self.setProgressValue((_self._oInterval ? data["progress"] : "100%"));
	}};
	dojo.io.bind(bArgs);
}, render:function () {
	this._setPercentLabel(dojo.string.trim(this._progressPercentValue));
	this._setPixelValue(this._pixelValue);
	this._setLabelPosition();
}, _setLabelPosition:function () {
	var _widthFront = dojo.html.getContentBox(this.frontPercentLabel).width;
	var _heightFront = dojo.html.getContentBox(this.frontPercentLabel).height;
	var _widthBack = dojo.html.getContentBox(this.backPercentLabel).width;
	var _heightBack = dojo.html.getContentBox(this.backPercentLabel).height;
	var _leftFront = (parseInt(this.width) - _widthFront) / 2 + "px";
	var _bottomFront = (parseInt(this.height) - parseInt(_heightFront)) / 2 + "px";
	var _leftBack = (parseInt(this.width) - _widthBack) / 2 + "px";
	var _bottomBack = (parseInt(this.height) - parseInt(_heightBack)) / 2 + "px";
	this.frontPercentLabel.style.left = _leftFront;
	this.backPercentLabel.style.left = _leftBack;
	this.frontPercentLabel.style.bottom = _bottomFront;
	this.backPercentLabel.style.bottom = _bottomBack;
}, _setPercentLabel:function (percentValue) {
	dojo.dom.removeChildren(this.frontPercentLabel);
	dojo.dom.removeChildren(this.backPercentLabel);
	var _percentValue = this.showOnlyIntegers == false ? percentValue : parseInt(percentValue) + "%";
	this.frontPercentLabel.appendChild(document.createTextNode(_percentValue));
	this.backPercentLabel.appendChild(document.createTextNode(_percentValue));
}, _setPixelValue:function (value) {
	eval("this.internalProgress.style." + this._dimension + " = " + value + " + 'px'");
	this.onChange();
}, onChange:function () {
}});