spinner.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.Spinner");
dojo.require("dojo.io.*");
dojo.require("dojo.lfx.*");
dojo.require("dojo.html.*");
dojo.require("dojo.html.layout");
dojo.require("dojo.string");
dojo.require("dojo.widget.*");
dojo.require("dojo.widget.IntegerTextbox");
dojo.require("dojo.widget.RealNumberTextbox");
dojo.require("dojo.widget.DateTextbox");
dojo.require("dojo.experimental");
dojo.declare("dojo.widget.Spinner", null, {_typamaticTimer:null, _typamaticFunction:null, _currentTimeout:this.defaultTimeout, _eventCount:0, defaultTimeout:500, timeoutChangeRate:0.9, templateString:"<span _=\"weird end tag formatting is to prevent whitespace from becoming &nbsp;\"\n\tstyle='float:${this.htmlfloat};'\n\t><table cellpadding=0 cellspacing=0 class=\"dojoSpinner\">\n\t\t<tr>\n\t\t\t<td\n\t\t\t\t><input\n\t\t\t\t\tdojoAttachPoint='textbox' type='${this.type}'\n\t\t\t\t\tdojoAttachEvent='onblur;onfocus;onkey:_handleKeyEvents;onKeyUp:_onSpinnerKeyUp;onresize:_resize'\n\t\t\t\t\tid='${this.widgetId}' name='${this.name}' size='${this.size}' maxlength='${this.maxlength}'\n\t\t\t\t\tvalue='${this.value}' class='${this.className}' autocomplete=\"off\"\n\t\t\t></td>\n\t\t\t<td\n\t\t\t\t><img dojoAttachPoint=\"upArrowNode\"\n\t\t\t\t\tdojoAttachEvent=\"onDblClick: _upArrowDoubleClicked;  onMouseDown: _upArrowPressed; onMouseUp: _arrowReleased; onMouseOut: _arrowReleased; onMouseMove: _discardEvent;\"\n\t\t\t\t\tsrc=\"${this.incrementSrc}\" style=\"width: ${this.buttonSize.width}px; height: ${this.buttonSize.height}px;\"\n\t\t\t\t><img dojoAttachPoint=\"downArrowNode\"\n\t\t\t\t\tdojoAttachEvent=\"onDblClick: _downArrowDoubleClicked;  onMouseDown: _downArrowPressed; onMouseUp: _arrowReleased; onMouseOut: _arrowReleased; onMouseMove: _discardEvent;\"\n\t\t\t\t\tsrc=\"${this.decrementSrc}\" style=\"width: ${this.buttonSize.width}px; height: ${this.buttonSize.height}px;\"\n\t\t\t></td>\n\t\t</tr>\n\t</table\n\t><span dojoAttachPoint='invalidSpan' class='${this.invalidClass}'>${this.messages.invalidMessage}</span\n\t><span dojoAttachPoint='missingSpan' class='${this.missingClass}'>${this.messages.missingMessage}</span\n\t><span dojoAttachPoint='rangeSpan' class='${this.rangeClass}'>${this.messages.rangeMessage}</span\n></span>\n", templateCssString:"/* inline the table holding the <input> and buttons (method varies by browser) */\n.ie .dojoSpinner, .safari .dojoSpinner {\n\tdisplay: inline;\n}\n\n.moz .dojoSpinner {\n\tdisplay: -moz-inline-box;\n}\n\n.opera .dojoSpinner {\n\tdisplay: inline-table;\n}\n\n/* generic stuff for the table */\n.dojoSpinner td {\n\tpadding:0px;\n\tmargin:0px;\n\tvertical-align: middle;\n}\ntable.dojoSpinner {\n\tborder:0px;\n\tborder-spacing:0px;\n\tline-height:0px;\n\tpadding:0px;\n\tmargin: 0px;\n\tvertical-align: middle;\n}\n\n/* the buttons */\n.dojoSpinner img {\n\tdisplay: block;\n\tborder-width:0px 1px 1px 0px;\n\tborder-style:outset;\n}\n", templateCssPath:dojo.uri.moduleUri("dojo.widget", "templates/Spinner.css"), incrementSrc:dojo.uri.moduleUri("dojo.widget", "templates/images/spinnerIncrement.gif"), decrementSrc:dojo.uri.moduleUri("dojo.widget", "templates/images/spinnerDecrement.gif"), _handleKeyEvents:function (evt) {
	if (!evt.key) {
		return;
	}
	if (!evt.ctrlKey && !evt.altKey) {
		switch (evt.key) {
		  case evt.KEY_DOWN_ARROW:
			dojo.event.browser.stopEvent(evt);
			this._downArrowPressed(evt);
			return;
		  case evt.KEY_UP_ARROW:
			dojo.event.browser.stopEvent(evt);
			this._upArrowPressed(evt);
			return;
		}
	}
	this._eventCount++;
}, _onSpinnerKeyUp:function (evt) {
	this._arrowReleased(evt);
	this.onkeyup(evt);
}, _resize:function () {
	var inputSize = dojo.html.getBorderBox(this.textbox);
	this.buttonSize = {width:inputSize.height / 2, height:inputSize.height / 2};
	if (this.upArrowNode) {
		dojo.html.setMarginBox(this.upArrowNode, this.buttonSize);
		dojo.html.setMarginBox(this.downArrowNode, this.buttonSize);
	}
}, _pressButton:function (node) {
	node.style.borderWidth = "1px 0px 0px 1px";
	node.style.borderStyle = "inset";
}, _releaseButton:function (node) {
	node.style.borderWidth = "0px 1px 1px 0px";
	node.style.borderStyle = "outset";
}, _arrowPressed:function (evt, direction) {
	var nodePressed = (direction == -1) ? this.downArrowNode : this.upArrowNode;
	var nodeReleased = (direction == +1) ? this.downArrowNode : this.upArrowNode;
	if (typeof evt != "number") {
		if (this._typamaticTimer != null) {
			if (this._typamaticNode == nodePressed) {
				return;
			}
			dojo.lang.clearTimeout(this._typamaticTimer);
		}
		this._releaseButton(nodeReleased);
		this._eventCount++;
		this._typamaticTimer = null;
		this._currentTimeout = this.defaultTimeout;
	} else {
		if (evt != this._eventCount) {
			this._releaseButton(nodePressed);
			return;
		}
	}
	this._pressButton(nodePressed);
	this._setCursorX(this.adjustValue(direction, this._getCursorX()));
	this._typamaticNode = nodePressed;
	this._typamaticTimer = dojo.lang.setTimeout(this, "_arrowPressed", this._currentTimeout, this._eventCount, direction);
	this._currentTimeout = Math.round(this._currentTimeout * this.timeoutChangeRate);
}, _downArrowPressed:function (evt) {
	return this._arrowPressed(evt, -1);
}, _downArrowDoubleClicked:function (evt) {
	var rc = this._downArrowPressed(evt);
	dojo.lang.setTimeout(this, "_arrowReleased", 50, null);
	return rc;
}, _upArrowPressed:function (evt) {
	return this._arrowPressed(evt, +1);
}, _upArrowDoubleClicked:function (evt) {
	var rc = this._upArrowPressed(evt);
	dojo.lang.setTimeout(this, "_arrowReleased", 50, null);
	return rc;
}, _arrowReleased:function (evt) {
	this.textbox.focus();
	if (evt != null && typeof evt == "object" && evt.keyCode && evt.keyCode != null) {
		var keyCode = evt.keyCode;
		var k = dojo.event.browser.keys;
		switch (keyCode) {
		  case k.KEY_DOWN_ARROW:
		  case k.KEY_UP_ARROW:
			dojo.event.browser.stopEvent(evt);
			break;
		}
	}
	this._releaseButton(this.upArrowNode);
	this._releaseButton(this.downArrowNode);
	this._eventCount++;
	if (this._typamaticTimer != null) {
		dojo.lang.clearTimeout(this._typamaticTimer);
	}
	this._typamaticTimer = null;
	this._currentTimeout = this.defaultTimeout;
}, _mouseWheeled:function (evt) {
	var scrollAmount = 0;
	if (typeof evt.wheelDelta == "number") {
		scrollAmount = evt.wheelDelta;
	} else {
		if (typeof evt.detail == "number") {
			scrollAmount = -evt.detail;
		}
	}
	if (scrollAmount > 0) {
		this._upArrowPressed(evt);
		this._arrowReleased(evt);
	} else {
		if (scrollAmount < 0) {
			this._downArrowPressed(evt);
			this._arrowReleased(evt);
		}
	}
}, _discardEvent:function (evt) {
	dojo.event.browser.stopEvent(evt);
}, _getCursorX:function () {
	var x = -1;
	try {
		this.textbox.focus();
		if (typeof this.textbox.selectionEnd == "number") {
			x = this.textbox.selectionEnd;
		} else {
			if (document.selection && document.selection.createRange) {
				var range = document.selection.createRange().duplicate();
				if (range.parentElement() == this.textbox) {
					range.moveStart("textedit", -1);
					x = range.text.length;
				}
			}
		}
	}
	catch (e) {
	}
	return x;
}, _setCursorX:function (x) {
	try {
		this.textbox.focus();
		if (!x) {
			x = 0;
		}
		if (typeof this.textbox.selectionEnd == "number") {
			this.textbox.selectionEnd = x;
		} else {
			if (this.textbox.createTextRange) {
				var range = this.textbox.createTextRange();
				range.collapse(true);
				range.moveEnd("character", x);
				range.moveStart("character", x);
				range.select();
			}
		}
	}
	catch (e) {
	}
}, _spinnerPostMixInProperties:function (args, frag) {
	var inputNode = this.getFragNodeRef(frag);
	var inputSize = dojo.html.getBorderBox(inputNode);
	this.buttonSize = {width:inputSize.height / 2 - 1, height:inputSize.height / 2 - 1};
}, _spinnerPostCreate:function (args, frag) {
	if (this.textbox.addEventListener) {
		this.textbox.addEventListener("DOMMouseScroll", dojo.lang.hitch(this, "_mouseWheeled"), false);
	} else {
		dojo.event.connect(this.textbox, "onmousewheel", this, "_mouseWheeled");
	}
}});
dojo.widget.defineWidget("dojo.widget.IntegerSpinner", [dojo.widget.IntegerTextbox, dojo.widget.Spinner], {delta:"1", postMixInProperties:function (args, frag) {
	dojo.widget.IntegerSpinner.superclass.postMixInProperties.apply(this, arguments);
	this._spinnerPostMixInProperties(args, frag);
}, postCreate:function (args, frag) {
	dojo.widget.IntegerSpinner.superclass.postCreate.apply(this, arguments);
	this._spinnerPostCreate(args, frag);
}, adjustValue:function (direction, x) {
	var val = this.getValue().replace(/[^\-+\d]/g, "");
	if (val.length == 0) {
		return;
	}
	var num = Math.min(Math.max((parseInt(val) + (parseInt(this.delta) * direction)), (this.flags.min ? this.flags.min : -Infinity)), (this.flags.max ? this.flags.max : +Infinity));
	val = num.toString();
	if (num >= 0) {
		val = ((this.flags.signed == true) ? "+" : " ") + val;
	}
	if (this.flags.separator.length > 0) {
		for (var i = val.length - 3; i > 1; i -= 3) {
			val = val.substr(0, i) + this.flags.separator + val.substr(i);
		}
	}
	if (val.substr(0, 1) == " ") {
		val = val.substr(1);
	}
	this.setValue(val);
	return val.length;
}});
dojo.widget.defineWidget("dojo.widget.RealNumberSpinner", [dojo.widget.RealNumberTextbox, dojo.widget.Spinner], function () {
	dojo.experimental("dojo.widget.RealNumberSpinner");
}, {delta:"1e1", postMixInProperties:function (args, frag) {
	dojo.widget.RealNumberSpinner.superclass.postMixInProperties.apply(this, arguments);
	this._spinnerPostMixInProperties(args, frag);
}, postCreate:function (args, frag) {
	dojo.widget.RealNumberSpinner.superclass.postCreate.apply(this, arguments);
	this._spinnerPostCreate(args, frag);
}, adjustValue:function (direction, x) {
	var val = this.getValue().replace(/[^\-+\.eE\d]/g, "");
	if (!val.length) {
		return;
	}
	var num = parseFloat(val);
	if (isNaN(num)) {
		return;
	}
	var delta = this.delta.split(/[eE]/);
	if (!delta.length) {
		delta = [1, 1];
	} else {
		delta[0] = parseFloat(delta[0].replace(/[^\-+\.\d]/g, ""));
		if (isNaN(delta[0])) {
			delta[0] = 1;
		}
		if (delta.length > 1) {
			delta[1] = parseInt(delta[1]);
		}
		if (isNaN(delta[1])) {
			delta[1] = 1;
		}
	}
	val = this.getValue().split(/[eE]/);
	if (!val.length) {
		return;
	}
	var numBase = parseFloat(val[0].replace(/[^\-+\.\d]/g, ""));
	if (val.length == 1) {
		var numExp = 0;
	} else {
		var numExp = parseInt(val[1].replace(/[^\-+\d]/g, ""));
	}
	if (x <= val[0].length) {
		x = 0;
		numBase += delta[0] * direction;
	} else {
		x = Number.MAX_VALUE;
		numExp += delta[1] * direction;
		if (this.flags.eSigned == false && numExp < 0) {
			numExp = 0;
		}
	}
	num = Math.min(Math.max((numBase * Math.pow(10, numExp)), (this.flags.min ? this.flags.min : -Infinity)), (this.flags.max ? this.flags.max : +Infinity));
	if ((this.flags.exponent == true || (this.flags.exponent != false && x != 0)) && num.toExponential) {