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jquery.calculator.js
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jquery.calculator.js
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/* http://keith-wood.name/calculator.html
Calculator field entry extension for jQuery v2.0.1.
Written by Keith Wood (kbwood{at}iinet.com.au) October 2008.
Licensed under the MIT (https://github.com/jquery/jquery/blob/master/MIT-LICENSE.txt) licence.
Please attribute the author if you use it. */
(function($) { // hide the namespace
var pluginName = 'calculator';
var layoutStandard = [' BSCECA', '_1_2_3_+@X', '_4_5_6_-@U', '_7_8_9_*@E', '_0_._=_/'];
var digit = 'd';
var binary = 'b';
var unary = 'u';
var control = 'c';
var space = 's';
/** Create the calculator plugin.
<p>Sets an input field to popup a calculator for arithmetic computations.</p>
<p>Expects HTML like:</p>
<pre><input type="text"></pre>
<p>Provide inline configuration like:</p>
<pre><input type="text" data-calculator="name: 'value'"/></pre>
@module Calculator
@augments JQPlugin
@example $(selector).calculator() */
$.JQPlugin.createPlugin({
/** The name of the plugin. */
name: pluginName,
/** Calculator is operator callback.
Triggered when determining which keystrokes popup the calculator.
@callback isOperatorCallback
@param ch {string} The character just type.
@param event {Event} The keystroke event.
@param value {string} The current field value.
@param base {number} The number base currently in use.
@param decimalChar {string} The character used to denote the decimal point.
@return {boolean} <code>true</code> if this character is an operator, <code>false</code> if not.
@example isOperator: function(ch, event, value, base, decimalChar) {
return '+-/*'.indexOf(ch) > -1;
} */
/** Calculator open callback.
Triggered when the popup calculator opens.
@callback openCallback
@param value {string} The current field value.
@param inst {object} The current instance settings. */
/** Calculator button callback.
Triggered when a button in the calculator is clicked.
@callback buttonCallback
@param label {string} The label from the clicked button.
@param value {string} The current field value.
@param inst {object} The current instance settings. */
/** Calculator close callback.
Triggered when the popup calculator closes.
@callback closeCallback
@param value {string} The current field value.
@param inst {object} The current instance settings. */
/** Calculator math callback.
Triggered when a button is clicked to activate the underlying maths.
@callback mathCallback
@param inst {object} The current instance settings.
@param label {string} The button label.
@example function add(inst) {
inst.curValue = inst.prevValue + inst.curValue;
} */
/** Default settings for the plugin.
@property [showOn='focus'] {string} When to display the calculator:
'focus' for popup on focus, 'button' for trigger button,
'both' for either, 'operator' for non-numeric character entered,
'opbutton' for operator/button combination.
@property [buttonImage=''] {string} The URL for the trigger button image.
@property [buttonImageOnly=false] {boolean} <code>true</code> if the image appears alone, <code>false</code> if it appears on a button.
@property [isOperator=$.calculator.isOperator] {operatorCallback} Call back function to determine if a keystroke opens the calculator.
@property [showAnim='show'] {string} The name of jQuery animation for popup.
@property [showOptions={}] {object} Any options for enhanced animations.
@property [duration='normal'] {string|number} The duration of display/closure (ms).
@property [appendText=''] {string} Any display text following the input box, e.g. showing the format.
@property [useThemeRoller=false] {boolean} <code>true</code> to add ThemeRoller classes.
@property [calculatorClass=''] {string} Any additional CSS class for the calculator for an instance.
@property [showFormula=false] {boolean} <code>true</code> to display formula as it's entered, <code>false</code> to hide it.
@property [prompt=''] {string} Text across the top of the calculator.
@property [layout=[' BSCECA', '_1_2_3_+@X', '_4_5_6_-@U', '_7_8_9_*@E', '_0_._=_/']] {string[]} The layout of keys by row.
@property [value=0] {number} The initial value for inline calculators.
@property [base=10] {number} The numeric base for calculations.
@property [precision=10] {number} The number of digits of precision to use in rounding for display.
@property [memoryAsCookie=false] {boolean} <code>true</code> to save memory into cookie, <code>false</code> for memory only.
@property [cookieName='calculatorMemory'] {string} The name of cookie for memory.
@property [cookieExpires=24 * 60 * 60] {Date|number} The time that the memory cookie expires as a Date or number of seconds.
@property [cookiePath=''] {string} The path for the memory cookie.
@property [useDegrees=false] {boolean} <code>true</code> to use degress for trigonometric functions, <code>false</code> for radians.
@property [constrainInput=true] {boolean} <code>true</code> to restrict typed characters to numerics, <code>false</code> to allow anything.
@property [onOpen=null] {openCallback} Define a callback function before the panel is opened.
@property [onButton=null] {buttonCallback} Define a callback function when a button is activated.
@property [onClose=null] {closeCallback} Define a callback function when the panel is closed. */
defaultOptions: {
showOn: 'focus',
buttonImage: '',
buttonImageOnly: false,
isOperator: null,
showAnim: 'show',
showOptions: {},
duration: 'normal',
appendText: '',
useThemeRoller: false,
calculatorClass: '',
showFormula: false,
prompt: '',
layout: layoutStandard,
value: 0,
base: 10,
precision: 10,
memoryAsCookie: false,
cookieName: 'calculatorMemory',
cookieExpires: 24 * 60 * 60,
cookiePath: '',
useDegrees: false,
constrainInput: true,
onOpen: null,
onButton: null,
onClose: null
},
/** Localisations for the plugin.
Entries are objects indexed by the language code ('' being the default US/English).
Each object has the following attributes.
@property [decimalChar='.'] {string} Character for the decimal point.
@property [buttonText='...'] {string} Display text for trigger button.
@property [buttonStatus='Open the calculator'] {string} Status text for trigger button.
@property [closeText='Close'] {string} Display text for close link.
@property [closeStatus='Close the calculator'] {string} Status text for close link.
@property [useText='Use'] {string} Display text for use link.
@property [useStatus='Use the current value'] {string} Status text for use link.
@property [eraseText='Erase'] {string} Display text for erase link.
@property [eraseStatus='Erase the value from the field'] {string} Status text for erase link.
@property [backspaceText='BS'] {string} Display text for backspace link.
@property [backspaceStatus='Erase the last digit'] {string} Status text for backspace link.
@property [clearErrorText='CE'] {string} Display text for clear error link.
@property [clearErrorStatus='Erase the last number'] {string} Status text for clear error link.
@property [clearText='CA'] {string} Display text for clear link.
@property [clearStatus='Reset the calculator'] {string} Status text for clear link.
@property [memClearText='MC'] {string} Display text for memory clear link.
@property [memClearStatus='Clear the memory'] {string} Status text for memory clear link.
@property [memRecallText='MR'] {string} Display text for memory recall link.
@property [memRecallStatus='Recall the value from memory'] {string} Status text for memory recall link.
@property [memStoreText='MS'] {string} Display text for memory store link.
@property [memStoreStatus='Store the value in memory'] {string} Status text for memory store link.
@property [memAddText='M+'] {string} Display text for memory add link.
@property [memAddStatus='Add to memory'] {string} Status text for memory add link.
@property [memSubtractText='M-'] {string} Display text for memory subtract link.
@property [memSubtractStatus='Subtract from memory'] {string} Status text for memory subtract link.
@property [base2Text='Bin'] {string} Display text for base 2 link.
@property [base2Status='Switch to binary'] {string} Status text for base 2 link.
@property [base8Text='Oct'] {string} Display text for base 8 link.
@property [base8Status='Switch to octal'] {string} Status text for base 8 link.
@property [base10Text='Dec'] {string} Display text for base 10 link.
@property [base10Status='Switch to decimal'] {string} Status text for base 10 link.
@property [base16Text='Hex'] {string} Display text for base 16 link.
@property [base16Status='Switch to hexadecimal'] {string} Status text for base 16 link.
@property [degreesText='Deg'] {string} Display text for degrees link.
@property [degreesStatus='Switch to degrees'] {string} Status text for degrees link.
@property [radiansText='Rad'] {string} Display text for radians link.
@property [radiansStatus='Switch to radians'] {string} Status text for radians link.
@property [isRTL=false] {boolean} <code>true</code> if right-to-left language, <code>false</code> if left-to-right. */
regionalOptions: { // Available regional settings, indexed by language/country code
'': { // Default regional settings - English/US
decimalChar: '.',
buttonText: '...',
buttonStatus: 'Open the calculator',
closeText: 'Close',
closeStatus: 'Close the calculator',
useText: 'Use',
useStatus: 'Use the current value',
eraseText: 'Erase',
eraseStatus: 'Erase the value from the field',
backspaceText: 'BS',
backspaceStatus: 'Erase the last digit',
clearErrorText: 'CE',
clearErrorStatus: 'Erase the last number',
clearText: 'CA',
clearStatus: 'Reset the calculator',
memClearText: 'MC',
memClearStatus: 'Clear the memory',
memRecallText: 'MR',
memRecallStatus: 'Recall the value from memory',
memStoreText: 'MS',
memStoreStatus: 'Store the value in memory',
memAddText: 'M+',
memAddStatus: 'Add to memory',
memSubtractText: 'M-',
memSubtractStatus: 'Subtract from memory',
base2Text: 'Bin',
base2Status: 'Switch to binary',
base8Text: 'Oct',
base8Status: 'Switch to octal',
base10Text: 'Dec',
base10Status: 'Switch to decimal',
base16Text: 'Hex',
base16Status: 'Switch to hexadecimal',
degreesText: 'Deg',
degreesStatus: 'Switch to degrees',
radiansText: 'Rad',
radiansStatus: 'Switch to radians',
isRTL: false
}
},
/** Names of getter methods - those that can't be chained. */
_getters: ['isDisabled'],
_curInst: null, // The current instance in use
_disabledFields: [], // List of calculator inputs that have been disabled
_showingCalculator: false, // True if the popup panel is showing , false if not
_showingKeystrokes: false, // True if showing keystrokes for calculator buttons
/* The definitions of the buttons that may appear on the calculator.
Key is ID. Fields are display text, button type, function,
class(es), field name, keystroke, keystroke name. */
_keyDefs: {},
/** Indicator of a digit key.
For use with <code>addKeyDef</code>. */
digit: digit,
/** Indicator of a binary operation key.
For use with <code>addKeyDef</code>. */
binary: binary,
/** Indicator of a unary operation key.
For use with <code>addKeyDef</code>. */
unary: unary,
/** Indicator of a control key.
For use with <code>addKeyDef</code>. */
control: control,
/** Indicator of a space.
For use with <code>addKeyDef</code>. */
space: space,
_mainDivClass: pluginName + '-popup', // The name of the main calculator division marker class
_inlineClass: pluginName + '-inline', // The name of the inline marker class
_appendClass: pluginName + '-append', // The name of the appended text marker class
_triggerClass: pluginName + '-trigger', // The name of the trigger marker class
_disableClass: pluginName + '-disabled', // The name of the disabled covering marker class
_inlineEntryClass: pluginName + '-keyentry', // The name of the inline entry marker class
_promptClass: pluginName + '-prompt', // The name of the prompt marker class
_formulaClass: pluginName + '-formula', // The name of the formula marker class
_resultClass: pluginName + '-result', // The name of the calculator result marker class
_focussedClass: pluginName + '-focussed', // The name of the focussed marker class
_keystrokeClass: pluginName + '-keystroke', // The name of the keystroke marker class
_rtlClass: pluginName + '-rtl', // The name of the right-to-left marker class
_rowClass: pluginName + '-row', // The name of the row marker class
_ctrlClass: pluginName + '-ctrl', // The name of the control key marker class
_baseActiveClass: pluginName + '-base-active', // The name of the active base marker class
_angleActiveClass: pluginName + '-angle-active', // The name of the active angle marker class
_digitClass: pluginName + '-digit', // The name of the digit key marker class
_operatorClass: pluginName + '-oper', // The name of the operator key marker class
_memEmptyClass: pluginName + '-mem-empty', // The name of the memory empty marker class
_keyNameClass: pluginName + '-keyname', // The name of the key name marker class
_keyDownClass: pluginName + '-key-down', // The name of the key down marker class
_keyStrokeClass: pluginName + '-keystroke', // The name of the key stroke marker class
/** The standard calculator layout with simple operations. */
standardLayout: layoutStandard,
/** The extended calculator layout with common scientific operations. */
scientificLayout: ['@X@U@E BSCECA', 'DGRD _ MC_ _7_8_9_+', 'SNASSRLG_ MR_ _4_5_6_-',
'CSACSQLN_ MS_ _1_2_3_*', 'TNATXYEX_ M+_ _0_.+-_/', 'PIRN1X _ M-_ _%_='],
/** Add a new key definition.
@param code {string} The two-character code for this key.
@param label {string} The display label for this key. If the label starts with '#' the corresponding
<code>regionalOptions</code> 'xxxText' is used instead to allow for localisation.
@param type {boolean|string} <code>true</code> if this is a binary operator, <code>false</code> if a unary operator,
or key type - use constants (<code>$.calculator.</code>) <code>digit</code>,
<code>binary</code>, <code>unary</code>, <code>space</code>, <code>control</code>.
@param func {mathCallback} The function that applies this key -
it is expected to take a parameter of the current instance.
@param [style] {string} Any additional CSS styles for this key.
@param [constant] {string} The name of a constant to create for this key.
@param keystroke {string|number} The character or key code of the keystroke for this key.
@param keyName {string} The name of the keystroke for this key.
@return {object} The calculator object for chaining further calls.
@example $.calculator.addKeyDef('BO', '#base8', $.calculator.control, $.calculator._base8, 'base base8', 'BASE_8', 'C'); */
addKeyDef: function(code, label, type, func, style, constant, keystroke, keyName) {
this._keyDefs[code] = [label, (typeof type === 'boolean' ? (type ? this.binary : this.unary) : type),
func, style, constant, keystroke, keyName];
if (constant) {
this[constant] = code;
}
if (keystroke) {
if (typeof keystroke === 'number') {
this._keyCodes[keystroke] = code;
}
else {
this._keyChars[keystroke] = code;
}
}
return this;
},
/** Additional setup for the calculator.
Create popup div. */
_init: function() {
this.mainDiv = $('<div class="' + this._mainDivClass + '" style="display: none;"></div>').
on('click.' + pluginName, this._focusEntry);
this._keyCodes = {};
this._keyChars = {};
this._super();
},
_instSettings: function(elem, options) {
var inline = elem[0].nodeName.toLowerCase() !== 'input';
var keyEntry = (!inline ? elem :
$('<input type="text" class="' + this._inlineEntryClass + '"/>'));
return {_input: keyEntry, _inline: inline, memory: 0,
_mainDiv: (inline ? $('<div class="' + this._inlineClass + '"></div>') : this.mainDiv)};
},
_postAttach: function(elem, inst) {
if (inst.options.memoryAsCookie) {
var memory = this._getMemoryCookie(inst);
if (memory && !isNaN(memory)) {
inst.memory = memory;
}
}
if (!inst._inline && elem.is(':disabled')) {
this.disable(elem[0]);
}
},
_optionsChanged: function(elem, inst, options) {
$.extend(inst.options, options);
if (this._curInst === inst) {
this.hide();
}
elem.empty().off('.' + inst.name).
siblings('.' + this._appendClass).remove().end().
siblings('.' + this._triggerClass).remove().end().
prev('.' + this._inlineEntryClass).remove();
if (inst.options.appendText) {
elem[inst.options.isRTL ? 'before' : 'after'](
'<span class="' + this._appendClass + '">' + inst.options.appendText + '</span>');
}
if (!inst._inline) {
if (inst.options.showOn === 'focus' || inst.options.showOn === 'both') {
// pop-up calculator when in the marked field
elem.on('focus.' + inst.name, this.show);
}
if (inst.options.showOn === 'button' || inst.options.showOn === 'both' ||
inst.options.showOn === 'opbutton') {
// pop-up calculator when button clicked
var trigger = $(inst.options.buttonImageOnly ?
$('<img/>').attr({src: inst.options.buttonImage,
alt: inst.options.buttonStatus, title: inst.options.buttonStatus}) :
$('<button type="button" title="' + inst.options.buttonStatus + '"></button>').
html(inst.options.buttonImage === '' ? inst.options.buttonText :
$('<img/>').attr({src: inst.options.buttonImage})));
elem[inst.options.isRTL ? 'before' : 'after'](trigger);
trigger.addClass(this._triggerClass).on('click.' + inst.name, function() {
if (plugin._showingCalculator && plugin._lastInput === elem[0]) {
plugin.hide();
}
else {
plugin.show(elem[0]);
}
return false;
});
}
}
inst._input.on('keydown.' + inst.name, this._doKeyDown).
on('keyup.' + inst.name, this._doKeyUp).
on('keypress.' + inst.name, this._doKeyPress);
if (inst._inline) {
elem.append(inst._input).append(inst._mainDiv).
on('click.' + inst.name, function() { inst._input.focus(); });
this._reset(inst, '0');
this._setValue(inst);
this._updateCalculator(inst);
inst._mainDiv.on('keydown.' + inst.name, this._doKeyDown).
on('keyup.' + inst.name, this._doKeyUp).
on('keypress.' + inst.name, this._doKeyPress);
inst._input.on('focus.' + inst.name, function() {
if (!plugin.isDisabled(elem[0])) {
inst._focussed = true;
$('.' + plugin._resultClass, inst._mainDiv).
addClass(plugin._focussedClass);
}
}).on('blur.' + inst.name, function() {
inst._focussed = false;
$('.' + plugin._resultClass, inst._mainDiv).
removeClass(plugin._focussedClass);
});
}
elem.addClass(this._getMarker()).
on('setData.' + inst.name, function(event, key, value) {
inst.options[key] = value;
}).
on('getData.' + inst.name, function(event, key) {
return inst.options[key];
}).
data(inst.name, inst);
inst._input.data(inst.name, inst);
if (inst._inline) {
this._setValue(inst);
}
this._updateCalculator(inst);
},
_preDestroy: function(elem, inst) {
inst._input.off('.' + inst.name).removeData(inst.name);
elem.empty().off('.' + inst.name).
siblings('.' + this._appendClass).remove().end().
siblings('.' + this._triggerClass).remove().end().
prev('.' + this._inlineEntryClass).remove();
},
/** Enable the calculator for a jQuery selection.
@param elem {Element} The target input field or division/span.
@example $(selector).calculator('enable'); */
enable: function(elem) {
elem = $(elem);
if (!elem.hasClass(this._getMarker())) {
return;
}
var nodeName = elem[0].nodeName.toLowerCase();
if (nodeName === 'input') {
elem.prop('disabled', false).siblings('button.' + this._triggerClass).prop('disabled', false).end().
siblings('img.' + this._triggerClass).css({opacity: '1.0', cursor: ''});
}
else if (nodeName === 'div' || nodeName === 'span') {
elem.find('.' + this._inlineEntryClass + ',button').prop('disabled', false).end().
children('.' + this._disableClass).remove();
}
this._disabledFields = $.map(this._disabledFields,
function(value) { return (value === elem[0] ? null : value); }); // delete entry
},
/** Disable the calculator for a jQuery selection.
@param elem {Element} The target input field or division/span.
@example $(selector).calculator('disable'); */
disable: function(elem) {
elem = $(elem);
if (!elem.hasClass(this._getMarker())) {
return;
}
var nodeName = elem[0].nodeName.toLowerCase();
if (nodeName === 'input') {
elem.prop('disabled', true).siblings('button.' + this._triggerClass).prop('disabled', true).end().
siblings('img.' + this._triggerClass).css({opacity: '0.5', cursor: 'default'});
}
else if (nodeName === 'div' || nodeName === 'span') {
var inline = elem.children('.' + this._inlineClass);
var offset = inline.offset();
var relOffset = {left: 0, top: 0};
inline.parents().each(function() {
if ($(this).css('position') === 'relative') {
relOffset = $(this).offset();
return false;
}
});
elem.find('.' + this._inlineEntryClass + ',button').prop('disabled', true);
if (elem.find('.' + this._disableClass).length === 0) {
elem.prepend('<div class="' + this._disableClass + '" style="width: ' +
inline.outerWidth() + 'px; height: ' + inline.outerHeight() +
'px; left: ' + (offset.left - relOffset.left) +
'px; top: ' + (offset.top - relOffset.top) + 'px;"></div>');
}
}
this._disabledFields = $.map(this._disabledFields,
function(value) { return (value === elem[0] ? null : value); }); // delete entry
this._disabledFields[this._disabledFields.length] = elem[0];
},
/** Is the input field or division/span disabled as a calculator?
@param elem {Element} the target control.
@return {boolean} <code>true</code> if disabled, <code>false</code> if enabled.
@example if ($(selector).calculator('isDisabled')) {...} */
isDisabled: function(elem) {
return (elem && $.inArray(elem, this._disabledFields) > -1);
},
/** Pop-up the calculator for a given input field or division/span.
@param input {Element|Event} The control attached to the calculator or the triggering event.
@example $(selector).calculator('show'); */
show: function(input) {
input = input.target || input;
if (plugin.isDisabled(input) || plugin._lastInput === input) { // already here
return;
}
var inst = plugin._getInst(input);
plugin.hide(null, '');
plugin._lastInput = input;
plugin._pos = plugin._findPos(input);
plugin._pos[1] += input.offsetHeight; // add the height
var isFixed = false;
$(input).parents().each(function() {
isFixed |= $(this).css('position') === 'fixed';
return !isFixed;
});
var offset = {left: plugin._pos[0], top: plugin._pos[1]};
plugin._pos = null;
// determine sizing offscreen
inst._mainDiv.css({position: 'absolute', display: 'block', top: '-1000px', width: 'auto'});
// callback before calculator opening
if ($.isFunction(inst.options.onOpen)) {
inst.options.onOpen.apply((inst._input ? inst._input[0] : null), // trigger custom callback
[(inst._inline ? inst.curValue : inst._input.val()), inst]);
}
plugin._reset(inst, inst._input.val());
plugin._updateCalculator(inst);
// and adjust position before showing
offset = plugin._checkOffset(inst, offset, isFixed);
inst._mainDiv.css({position: (isFixed ? 'fixed' : 'absolute'), display: 'none',
left: offset.left + 'px', top: offset.top + 'px'});
var duration = inst.options.duration;
duration = (duration == 'normal' && $.ui &&
parseInt($.ui.version.substring(2)) >= 8 ? '_default' : duration);
var postProcess = function() {
plugin._showingCalculator = true;
};
if ($.effects && ($.effects[inst.options.showAnim] ||
($.effects.effect && $.effects.effect[inst.options.showAnim]))) {
var data = inst._mainDiv.data(); // Update old effects data
for (var key in data) {
if (key.match(/^ec\.storage\./)) {
data[key] = inst._mainDiv.css(key.replace(/ec\.storage\./, ''));
}
}
inst._mainDiv.data(data).show(inst.options.showAnim,
inst.options.showOptions, duration, postProcess);
}
else {
inst._mainDiv[inst.options.showAnim || 'show']((inst.options.showAnim ? duration : null), postProcess);
}
if (!inst.options.showAnim) {
postProcess();
}
if (inst._input[0].type !== 'hidden') {
inst._input[0].focus();
}
plugin._curInst = inst;
},
/** Reinitialise the calculator.
@private
@param inst {object} The instance settings.
@param value {number} The starting value. */
_reset: function(inst, value) {
value = '' + (value || 0);
value = (inst.options.decimalChar !== '.' ?
value.replace(new RegExp(inst.options.decimalChar), '.') : value);
inst.curValue = (inst.options.base === 10 ? parseFloat(value) : parseInt(value, inst.options.base)) || 0;
inst.dispValue = this._setDisplay(inst);
inst.prevValue = inst._savedValue = 0;
inst._pendingOp = inst._savedOp = this._noOp;
inst._formula = '';
inst._newValue = true;
},
/** Retrieve the memory value from a cookie, if any.
@private
@param inst {object} The instance settings.
@return {number} The memory cookie value or NaN/null if unavailable. */
_getMemoryCookie: function(inst) {
var re = new RegExp('^.*' + inst.options.cookieName + '=([^;]*).*$');
return parseFloat(document.cookie.replace(re, '$1'));
},
/** Save the memory value as a cookie.
@private
@param inst {object} The instance settings. */
_setMemoryCookie: function(inst) {
if (!inst.options.memoryAsCookie) {
return;
}
var expires = inst.options.cookieExpires;
if (typeof expires === 'number') {
var time = new Date();
time.setTime(time.getTime() + expires * 1000);
expires = time.toUTCString();
}
else if (expires.constructor === Date) {
expires = time.toUTCString();
}
else {
expires = '';
}
document.cookie = inst.options.cookieName + '=' + inst.memory +
'; expires=' + expires + '; path=' + inst.options.cookiePath;
},
/** Set the initial value for display.
@private
@param inst {object} The instance settings. */
_setValue: function(inst) {
inst.curValue = inst.options.value || 0;
inst.dispValue = this._setDisplay(inst);
},
/** Generate the calculator content.
@private
@param inst {object} The instance settings. */
_updateCalculator: function(inst) {
var borders = this._getBorders(inst._mainDiv);
inst._mainDiv.html(this._generateHTML(inst)).removeClass().
addClass(inst.options.calculatorClass +
(inst.options.useThemeRoller ? ' ui-widget ui-widget-content' : '') +
(inst.options.isRTL ? ' ' + plugin._rtlClass : '') + ' ' +
(inst._inline ? this._inlineClass : this._mainDivClass));
if (this.isDisabled(inst.elem[0])) {
this.disable(inst.elem[0]);
}
if (this._curInst === inst) {
inst._input.focus();
}
},
/** Retrieve the size of left and top borders for an element.
@private
@param elem {jQuery} The element of interest.
@return {number[]} The left and top borders. */
_getBorders: function(elem) {
var convert = function(value) {
return {thin: 1, medium: 3, thick: 5}[value] || value;
};
return [parseFloat(convert(elem.css('border-left-width'))),
parseFloat(convert(elem.css('border-top-width')))];
},
/** Check positioning to remain on screen.
@private
@param inst {object} The instance settings.
@param offset {object} The current offset.
@param isFixed {boolean} <code>true</code> if the input field is fixed in position.
@return {object} The updated offset. */
_checkOffset: function(inst, offset, isFixed) {
var pos = inst._input ? this._findPos(inst._input[0]) : null;
var browserWidth = window.innerWidth || document.documentElement.clientWidth;
var browserHeight = window.innerHeight || document.documentElement.clientHeight;
var scrollX = document.documentElement.scrollLeft || document.body.scrollLeft;
var scrollY = document.documentElement.scrollTop || document.body.scrollTop;
// reposition calculator panel horizontally if outside the browser window
if (inst.options.isRTL || (offset.left + inst._mainDiv.outerWidth() - scrollX) > browserWidth) {
offset.left = Math.max((isFixed ? 0 : scrollX),
pos[0] + (inst._input ? inst._input.outerWidth() : 0) -
(isFixed ? scrollX : 0) - inst._mainDiv.outerWidth());
}
else {
offset.left = Math.max((isFixed ? 0 : scrollX), offset.left - (isFixed ? scrollX : 0));
}
// reposition calculator panel vertically if outside the browser window
if ((offset.top + inst._mainDiv.outerHeight() - scrollY) > browserHeight) {
offset.top = Math.max((isFixed ? 0 : scrollY),
pos[1] - (isFixed ? scrollY : 0) - inst._mainDiv.outerHeight());
}
else {
offset.top = Math.max((isFixed ? 0 : scrollY), offset.top - (isFixed ? scrollY : 0));
}
return offset;
},
/** Find an object's position on the screen.
@private
@param obj {Element} The element to find the position for.
@return {number[]} The element's position. */
_findPos: function(obj) {
while (obj && (obj.type === 'hidden' || obj.nodeType !== 1)) {
obj = obj.nextSibling;
}
var position = $(obj).offset();
return [position.left, position.top];
},
/** Hide the calculator from view.
@param input {Element} The control attached to the calculator.
@param duration {string} The duration over which to close the calculator.
@example $(selector).calculator('hide'); */
hide: function(input, duration) {
var inst = this._curInst;
if (!inst || (input && inst !== plugin._getInst(input))) {
return;
}
if (this._showingCalculator) {
duration = (duration != null ? duration : inst.options.duration);
duration = (duration === 'normal' && $.ui &&
parseInt($.ui.version.substring(2)) >= 8 ? '_default' : duration);
if ($.effects && ($.effects[inst.options.showAnim] ||
($.effects.effect && $.effects.effect[inst.options.showAnim]))) {
inst._mainDiv.hide(inst.options.showAnim, inst.options.showOptions, duration);
}
else {
inst._mainDiv[(inst.options.showAnim === 'slideDown' ? 'slideUp' :
(inst.options.showAnim === 'fadeIn' ? 'fadeOut' : 'hide'))](
inst.options.showAnim ? duration : null);
}
}
if ($.isFunction(inst.options.onClose)) {
inst.options.onClose.apply((inst._input ? inst._input[0] : null), // trigger custom callback
[(inst._inline ? inst.curValue : inst._input.val()), inst]);
}
if (this._showingCalculator) {
this._showingCalculator = false;
this._lastInput = null;
}
this._curInst = null;
},
/** Close calculator if clicked elsewhere.
@private
@param event {Event} The mouseclick details. */
_checkExternalClick: function(event) {
if (!plugin._curInst) {
return;
}
var target = $(event.target);
if (!target.parents().addBack().hasClass(plugin._mainDivClass) && !target.hasClass(plugin._getMarker()) &&
!target.parents().addBack().hasClass(plugin._triggerClass) && plugin._showingCalculator) {
plugin.hide();
}
},
/** Focus back onto the input field.
@private */
_focusEntry: function() {
if (plugin._curInst && plugin._curInst._input) {
plugin._curInst._input.focus();
}
},
/** Handle keystrokes.
@private
@param e {Event} The key event. */
_doKeyDown: function(e) {
var handled = false;
var inst = plugin._getInst(e.target);
var div = (inst && inst._inline ? $(e.target).parent()[0] : null);
if (e.keyCode === 9) { // tab
plugin.mainDiv.stop(true, true);
plugin.hide();
if (inst && inst._inline) {
inst._input.blur();
}
}
else if (plugin._showingCalculator || (div && !plugin.isDisabled(div))) {
if (e.keyCode === 18) { // alt - show keystrokes
if (!plugin._showingKeystrokes) {
inst._mainDiv.find('.' + plugin._keystrokeClass).show();
plugin._showingKeystrokes = true;
}
handled = true;
}
else {
var code = plugin._keyCodes[e.keyCode];
if (code) {
$('button[data-keystroke="' + code + '"]', inst._mainDiv).not(':disabled').click();
handled = true;
}
}
}
else if (e.keyCode === 36 && e.ctrlKey && inst && !inst._inline) {
plugin.show(this); // display the date picker on ctrl+home
}
if (handled) {
e.preventDefault();
e.stopPropagation();
}
return !handled;
},
/** Hide keystrokes, if showing.
@private
@param e {Event} The key event. */
_doKeyUp: function(e) {
if (plugin._showingKeystrokes) {
var inst = plugin._getInst(e.target);
inst._mainDiv.find('.' + plugin._keystrokeClass).hide();
plugin._showingKeystrokes = false;
}
},
/** Convert characters into button clicks.
@private
@param e {Event} The key event.
@return {boolean} <code>true</code> if keystroke allowed, <code>false</code> if not. */
_doKeyPress: function(e) {
var inst = plugin._getInst(e.target);
if (!inst) {
return true;
}
var div = (inst && inst._inline ? $(e.target).parent()[0] : null);
var ch = String.fromCharCode(e.charCode === undefined ? e.keyCode : e.charCode);
var isOperator = inst.options.isOperator || plugin.isOperator;
if (!plugin._showingCalculator && !div &&
(inst.options.showOn === 'operator' || inst.options.showOn === 'opbutton') &&
isOperator.apply(inst._input,
[ch, e, inst._input.val(), inst.options.base, inst.options.decimalChar])) {
plugin.show(this); // display the date picker on operator usage
plugin._showingCalculator = true;
}
if (plugin._showingCalculator || (div && !plugin.isDisabled(div))) {
var code = plugin._keyChars[ch === inst.options.decimalChar ? '.' : ch];
if (code) {
$('button[data-keystroke="' + code + '"]', inst._mainDiv).not(':disabled').click();
}
return false;
}
if (ch >= ' ' && inst.options.constrainInput) {
var pattern = new RegExp('^-?' +
(inst.options.base === 10 ? '[0-9]*(\\' + inst.options.decimalChar + '[0-9]*)?' :
'[' + '0123456789abcdef'.substring(0, inst.options.base) + ']*') + '$');
return (inst._input.val() + ch).toLowerCase().match(pattern) != null;
}
return true;
},
/** Determine whether or not a keystroke is a trigger for opening the calculator.
@param ch {string} The current character.
@param event {KeyEvent} The entire key event.
@param value {string} The current input value.
@param base {number} The current number base.
@param decimalChar {string} The current decimal character.
@return {boolean} <code>true</code> if a trigger, <code>false</code> if not. */
isOperator: function(ch, event, value, base, decimalChar) {
return ch > ' ' && !(ch === '-' && value === '') &&
('0123456789abcdef'.substr(0, base) + '.' + decimalChar).indexOf(ch.toLowerCase()) === -1;
},
/** Generate the HTML for the current state of the calculator.
@private
@param inst {object} The instance settings.
@return {string} The HTML for this calculator. */
_generateHTML: function(inst) {
var html = (!inst.options.prompt ? '' : '<div class="' + this._promptClass +
(inst.options.useThemeRoller ? ' ui-widget-header ui-corner-all' : '') + '">' +
inst.options.prompt + '</div>') + '<div class="' + this._resultClass +
(inst.options.useThemeRoller ? ' ui-widget-header' : '' ) +
(inst._focussed ? ' ' + this._focussedClass: '') + '">' +
(inst.options.showFormula ?
'<span class="' + this._formulaClass + '">' + inst._formula + '</span>' : '') +
'<span>' + inst.dispValue + '</span></div>';
for (var i = 0; i < inst.options.layout.length; i++) {
html += '<div class="' + this._rowClass + '">';
for (var j = 0; j < inst.options.layout[i].length; j += 2) {
var code = inst.options.layout[i].substr(j, 2);
var def = this._keyDefs[code] || this._keyDefs['??'];
var label = (def[0].charAt(0) === '#' ? inst.options[def[0].substr(1) + 'Text'] : def[0]);
var status = (def[0].charAt(0) === '#' ? inst.options[def[0].substr(1) + 'Status'] : '');
var styles = (def[3] ? def[3].split(' ') : []);
for (var k = 0; k < styles.length; k++) {
styles[k] = inst.name + '-' + styles[k];
}
styles = styles.join(' ');
var uiActive = (inst.options.useThemeRoller ? ' ui-state-active' : '');
var uiHighlight = (inst.options.useThemeRoller ? ' ui-state-highlight' : '');
html += (def[1] === this.space ? '<span class="' + inst.name + '-' + def[3] + '"></span>' :
(inst._inline && (def[2] === '._close' || def[2] === '._erase') ? '' :
'<button type="button" data-keystroke="' + code + '"' +
// Control buttons
(def[1] === this.control ? ' class="' + this._ctrlClass +
(def[0].match(/^#base/) ? (def[0].replace(/^#base/, '') === inst.options.base ?
uiActive || ' ' + this._baseActiveClass : uiHighlight) :
(def[0] === '#degrees' ? (inst.options.useDegrees ?
uiActive || ' ' + this._angleActiveClass : uiHighlight) :
(def[0] === '#radians' ? (!inst.options.useDegrees ?
uiActive || ' ' + this._angleActiveClass : uiHighlight) : uiHighlight))) :
// Digits
(def[1] === this.digit ? (parseInt(def[0], 16) >= inst.options.base ||
(inst.options.base !== 10 && def[0] === '.') ?
' disabled="disabled"' : '') + ' class="' + this._digitClass :
// Binary operations
(def[1] === this.binary ? ' class="' + this._operatorClass :
// Unary operations
' class="' + this._operatorClass +
(def[0].match(/^#mem(Clear|Recall)$/) && !inst.memory ?
' ' + this._memEmptyClass : '')))) +
// Common
(inst.options.useThemeRoller ? ' ui-state-default' : '') +
(styles ? ' ' + styles : '') + '" ' +
(status ? 'title="' + status + '"' : '') + '>' +
(code === '_.' ? inst.options.decimalChar : label) +
// Keystrokes
(def[5] && def[5] !== def[0] ? '<span class="' + this._keystrokeClass +
(inst.options.useThemeRoller ? ' ui-state-error' : '') +
(def[6] ? ' ' + this._keyNameClass : '') + '">' + (def[6] || def[5]) + '</span>' : '') +
'</button>'));
}
html += '</div>';
}
html += '<div style="clear: both;"></div>';
html = $(html);
html.find('button').on('mouseover.' + inst.name, function() {
plugin._saveClasses = this.className;
}).
on('mousedown.' + inst.name, function() {
$(this).addClass(this._keyDownClass + (inst.options.useThemeRoller ? ' ui-state-active' : ''));
}).
on('mouseup.' + inst.name, function() {
$(this).removeClass().addClass(plugin._saveClasses);
}).
on('mouseout.' + inst.name, function() {
$(this).removeClass().addClass(plugin._saveClasses);
}).
on('click.' + inst.name, function() {
plugin._handleButton(inst, $(this));
});
return html;
},
/** Generate the display value.
Tidy the result to avoid JavaScript rounding errors.
@private
@param inst (object) the instance settings
@return (string) the rounded and formatted display value */
_setDisplay: function(inst) {
var fixed = new Number(inst.curValue).toFixed(inst.options.precision).valueOf(); // Round to specified precision
var exp = fixed.replace(/^.+(e.+)$/, '$1').replace(/^[^e].*$/, ''); // Extract exponent
if (exp) {
fixed = new Number(fixed.replace(/e.+$/, '')).toFixed(inst.options.precision).valueOf(); // Round mantissa
}
return parseFloat(fixed.replace(/0+$/, '') + exp). // Recombine
toString(inst.options.base).toUpperCase().replace(/\./, inst.options.decimalChar);
},
/** Send notification of a button activation.
@private
@param inst {object} The instance settings.
@param label {string} The label from the button. */
_sendButton: function(inst, label) {
if ($.isFunction(inst.options.onButton)) {
inst.options.onButton.apply((inst._input ? inst._input[0] : null),
[label, inst.dispValue, inst]); // trigger custom callback
}
},
/** Handle a button press.
@private
@param inst {object} The current instance settings.
@param button {jQuery} The button pressed. */
_handleButton: function(inst, button) {
var keyDef = this._keyDefs[button.data('keystroke')];
if (!keyDef) {
return;
}
var label = button.text().substr(0, button.text().length -
button.children('.' + this._keyStrokeClass).text().length);
switch (keyDef[1]) {
case this.control:
keyDef[2].apply(this, [inst, label]); break;
case this.digit:
this._digit(inst, label); break;
case this.binary:
this._binaryOp(inst, keyDef[2], label); break;
case this.unary:
this._unaryOp(inst, keyDef[2], label); break;
}
if (plugin._showingCalculator || inst._inline) {
inst._input.focus();
}
},
/** Do nothing.
@private */
_noOp: function(inst) {
},
/** Add a digit to the number in the calculator.
@private
@param inst {object} The instance settings.
@param digit {string} The digit to append. */
_digit: function(inst, digit) {
inst.dispValue = (inst._newValue ? '' : inst.dispValue);
if (digit === inst.options.decimalChar && inst.dispValue.indexOf(digit) > -1) {
return;
}
inst.dispValue = (inst.dispValue + digit).replace(/^0(\d)/, '$1').
replace(new RegExp('^(-?)([\\.' + inst.options.decimalChar + '])'), '$10$2');
inst._formula += digit;
if (inst.options.decimalChar !== '.') {
inst.dispValue = inst.dispValue.replace(new RegExp('^' + inst.options.decimalChar), '0.');
}
var value = (inst.options.decimalChar !== '.' ?
inst.dispValue.replace(new RegExp(inst.options.decimalChar), '.') : inst.dispValue);
inst.curValue = (inst.options.base === 10 ? parseFloat(value) : parseInt(value, inst.options.base));
inst._newValue = false;
this._sendButton(inst, digit);
this._updateCalculator(inst);
},
/** Save a binary operation for later use.
@private
@param inst {object} The instance settings.
@param op {function} The binary function.
@param label {string} The button label. */
_binaryOp: function(inst, op, label) {
if (!inst._newValue && inst._pendingOp) {
inst._pendingOp(inst);