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October 20, 2017 20:31
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(function($) { | |
/** | |
* Generate an indented list of links from a nav. Meant for use with panel(). | |
* @return {jQuery} jQuery object. | |
*/ | |
$.fn.navList = function() { | |
var $this = $(this); | |
$a = $this.find('a'), | |
b = []; | |
$a.each(function() { | |
var $this = $(this), | |
indent = Math.max(0, $this.parents('li').length - 1), | |
href = $this.attr('href'), | |
target = $this.attr('target'); | |
b.push( | |
'<a ' + | |
'class="link depth-' + indent + '"' + | |
( (typeof target !== 'undefined' && target != '') ? ' target="' + target + '"' : '') + | |
( (typeof href !== 'undefined' && href != '') ? ' href="' + href + '"' : '') + | |
'>' + | |
'<span class="indent-' + indent + '"></span>' + | |
$this.text() + | |
'</a>' | |
); | |
}); | |
return b.join(''); | |
}; | |
/** | |
* Panel-ify an element. | |
* @param {object} userConfig User config. | |
* @return {jQuery} jQuery object. | |
*/ | |
$.fn.panel = function(userConfig) { | |
// No elements? | |
if (this.length == 0) | |
return $this; | |
// Multiple elements? | |
if (this.length > 1) { | |
for (var i=0; i < this.length; i++) | |
$(this[i]).panel(userConfig); | |
return $this; | |
} | |
// Vars. | |
var $this = $(this), | |
$body = $('body'), | |
$window = $(window), | |
id = $this.attr('id'), | |
config; | |
// Config. | |
config = $.extend({ | |
// Delay. | |
delay: 0, | |
// Hide panel on link click. | |
hideOnClick: false, | |
// Hide panel on escape keypress. | |
hideOnEscape: false, | |
// Hide panel on swipe. | |
hideOnSwipe: false, | |
// Reset scroll position on hide. | |
resetScroll: false, | |
// Reset forms on hide. | |
resetForms: false, | |
// Side of viewport the panel will appear. | |
side: null, | |
// Target element for "class". | |
target: $this, | |
// Class to toggle. | |
visibleClass: 'visible' | |
}, userConfig); | |
// Expand "target" if it's not a jQuery object already. | |
if (typeof config.target != 'jQuery') | |
config.target = $(config.target); | |
// Panel. | |
// Methods. | |
$this._hide = function(event) { | |
// Already hidden? Bail. | |
if (!config.target.hasClass(config.visibleClass)) | |
return; | |
// If an event was provided, cancel it. | |
if (event) { | |
event.preventDefault(); | |
event.stopPropagation(); | |
} | |
// Hide. | |
config.target.removeClass(config.visibleClass); | |
// Post-hide stuff. | |
window.setTimeout(function() { | |
// Reset scroll position. | |
if (config.resetScroll) | |
$this.scrollTop(0); | |
// Reset forms. | |
if (config.resetForms) | |
$this.find('form').each(function() { | |
this.reset(); | |
}); | |
}, config.delay); | |
}; | |
// Vendor fixes. | |
$this | |
.css('-ms-overflow-style', '-ms-autohiding-scrollbar') | |
.css('-webkit-overflow-scrolling', 'touch'); | |
// Hide on click. | |
if (config.hideOnClick) { | |
$this.find('a') | |
.css('-webkit-tap-highlight-color', 'rgba(0,0,0,0)'); | |
$this | |
.on('click', 'a', function(event) { | |
var $a = $(this), | |
href = $a.attr('href'), | |
target = $a.attr('target'); | |
if (!href || href == '#' || href == '' || href == '#' + id) | |
return; | |
// Cancel original event. | |
event.preventDefault(); | |
event.stopPropagation(); | |
// Hide panel. | |
$this._hide(); | |
// Redirect to href. | |
window.setTimeout(function() { | |
if (target == '_blank') | |
window.open(href); | |
else | |
window.location.href = href; | |
}, config.delay + 10); | |
}); | |
} | |
// Event: Touch stuff. | |
$this.on('touchstart', function(event) { | |
$this.touchPosX = event.originalEvent.touches[0].pageX; | |
$this.touchPosY = event.originalEvent.touches[0].pageY; | |
}) | |
$this.on('touchmove', function(event) { | |
if ($this.touchPosX === null | |
|| $this.touchPosY === null) | |
return; | |
var diffX = $this.touchPosX - event.originalEvent.touches[0].pageX, | |
diffY = $this.touchPosY - event.originalEvent.touches[0].pageY, | |
th = $this.outerHeight(), | |
ts = ($this.get(0).scrollHeight - $this.scrollTop()); | |
// Hide on swipe? | |
if (config.hideOnSwipe) { | |
var result = false, | |
boundary = 20, | |
delta = 50; | |
switch (config.side) { | |
case 'left': | |
result = (diffY < boundary && diffY > (-1 * boundary)) && (diffX > delta); | |
break; | |
case 'right': | |
result = (diffY < boundary && diffY > (-1 * boundary)) && (diffX < (-1 * delta)); | |
break; | |
case 'top': | |
result = (diffX < boundary && diffX > (-1 * boundary)) && (diffY > delta); | |
break; | |
case 'bottom': | |
result = (diffX < boundary && diffX > (-1 * boundary)) && (diffY < (-1 * delta)); | |
break; | |
default: | |
break; | |
} | |
if (result) { | |
$this.touchPosX = null; | |
$this.touchPosY = null; | |
$this._hide(); | |
return false; | |
} | |
} | |
// Prevent vertical scrolling past the top or bottom. | |
if (($this.scrollTop() < 0 && diffY < 0) | |
|| (ts > (th - 2) && ts < (th + 2) && diffY > 0)) { | |
event.preventDefault(); | |
event.stopPropagation(); | |
} | |
}); | |
// Event: Prevent certain events inside the panel from bubbling. | |
$this.on('click touchend touchstart touchmove', function(event) { | |
event.stopPropagation(); | |
}); | |
// Event: Hide panel if a child anchor tag pointing to its ID is clicked. | |
$this.on('click', 'a[href="#' + id + '"]', function(event) { | |
event.preventDefault(); | |
event.stopPropagation(); | |
config.target.removeClass(config.visibleClass); | |
}); | |
// Body. | |
// Event: Hide panel on body click/tap. | |
$body.on('click touchend', function(event) { | |
$this._hide(event); | |
}); | |
// Event: Toggle. | |
$body.on('click', 'a[href="#' + id + '"]', function(event) { | |
event.preventDefault(); | |
event.stopPropagation(); | |
config.target.toggleClass(config.visibleClass); | |
}); | |
// Window. | |
// Event: Hide on ESC. | |
if (config.hideOnEscape) | |
$window.on('keydown', function(event) { | |
if (event.keyCode == 27) | |
$this._hide(event); | |
}); | |
return $this; | |
}; | |
/** | |
* Apply "placeholder" attribute polyfill to one or more forms. | |
* @return {jQuery} jQuery object. | |
*/ | |
$.fn.placeholder = function() { | |
// Browser natively supports placeholders? Bail. | |
if (typeof (document.createElement('input')).placeholder != 'undefined') | |
return $(this); | |
// No elements? | |
if (this.length == 0) | |
return $this; | |
// Multiple elements? | |
if (this.length > 1) { | |
for (var i=0; i < this.length; i++) | |
$(this[i]).placeholder(); | |
return $this; | |
} | |
// Vars. | |
var $this = $(this); | |
// Text, TextArea. | |
$this.find('input[type=text],textarea') | |
.each(function() { | |
var i = $(this); | |
if (i.val() == '' | |
|| i.val() == i.attr('placeholder')) | |
i | |
.addClass('polyfill-placeholder') | |
.val(i.attr('placeholder')); | |
}) | |
.on('blur', function() { | |
var i = $(this); | |
if (i.attr('name').match(/-polyfill-field$/)) | |
return; | |
if (i.val() == '') | |
i | |
.addClass('polyfill-placeholder') | |
.val(i.attr('placeholder')); | |
}) | |
.on('focus', function() { | |
var i = $(this); | |
if (i.attr('name').match(/-polyfill-field$/)) | |
return; | |
if (i.val() == i.attr('placeholder')) | |
i | |
.removeClass('polyfill-placeholder') | |
.val(''); | |
}); | |
// Password. | |
$this.find('input[type=password]') | |
.each(function() { | |
var i = $(this); | |
var x = $( | |
$('<div>') | |
.append(i.clone()) | |
.remove() | |
.html() | |
.replace(/type="password"/i, 'type="text"') | |
.replace(/type=password/i, 'type=text') | |
); | |
if (i.attr('id') != '') | |
x.attr('id', i.attr('id') + '-polyfill-field'); | |
if (i.attr('name') != '') | |
x.attr('name', i.attr('name') + '-polyfill-field'); | |
x.addClass('polyfill-placeholder') | |
.val(x.attr('placeholder')).insertAfter(i); | |
if (i.val() == '') | |
i.hide(); | |
else | |
x.hide(); | |
i | |
.on('blur', function(event) { | |
event.preventDefault(); | |
var x = i.parent().find('input[name=' + i.attr('name') + '-polyfill-field]'); | |
if (i.val() == '') { | |
i.hide(); | |
x.show(); | |
} | |
}); | |
x | |
.on('focus', function(event) { | |
event.preventDefault(); | |
var i = x.parent().find('input[name=' + x.attr('name').replace('-polyfill-field', '') + ']'); | |
x.hide(); | |
i | |
.show() | |
.focus(); | |
}) | |
.on('keypress', function(event) { | |
event.preventDefault(); | |
x.val(''); | |
}); | |
}); | |
// Events. | |
$this | |
.on('submit', function() { | |
$this.find('input[type=text],input[type=password],textarea') | |
.each(function(event) { | |
var i = $(this); | |
if (i.attr('name').match(/-polyfill-field$/)) | |
i.attr('name', ''); | |
if (i.val() == i.attr('placeholder')) { | |
i.removeClass('polyfill-placeholder'); | |
i.val(''); | |
} | |
}); | |
}) | |
.on('reset', function(event) { | |
event.preventDefault(); | |
$this.find('select') | |
.val($('option:first').val()); | |
$this.find('input,textarea') | |
.each(function() { | |
var i = $(this), | |
x; | |
i.removeClass('polyfill-placeholder'); | |
switch (this.type) { | |
case 'submit': | |
case 'reset': | |
break; | |
case 'password': | |
i.val(i.attr('defaultValue')); | |
x = i.parent().find('input[name=' + i.attr('name') + '-polyfill-field]'); | |
if (i.val() == '') { | |
i.hide(); | |
x.show(); | |
} | |
else { | |
i.show(); | |
x.hide(); | |
} | |
break; | |
case 'checkbox': | |
case 'radio': | |
i.attr('checked', i.attr('defaultValue')); | |
break; | |
case 'text': | |
case 'textarea': | |
i.val(i.attr('defaultValue')); | |
if (i.val() == '') { | |
i.addClass('polyfill-placeholder'); | |
i.val(i.attr('placeholder')); | |
} | |
break; | |
default: | |
i.val(i.attr('defaultValue')); | |
break; | |
} | |
}); | |
}); | |
return $this; | |
}; | |
/** | |
* Moves elements to/from the first positions of their respective parents. | |
* @param {jQuery} $elements Elements (or selector) to move. | |
* @param {bool} condition If true, moves elements to the top. Otherwise, moves elements back to their original locations. | |
*/ | |
$.prioritize = function($elements, condition) { | |
var key = '__prioritize'; | |
// Expand $elements if it's not already a jQuery object. | |
if (typeof $elements != 'jQuery') | |
$elements = $($elements); | |
// Step through elements. | |
$elements.each(function() { | |
var $e = $(this), $p, | |
$parent = $e.parent(); | |
// No parent? Bail. | |
if ($parent.length == 0) | |
return; | |
// Not moved? Move it. | |
if (!$e.data(key)) { | |
// Condition is false? Bail. | |
if (!condition) | |
return; | |
// Get placeholder (which will serve as our point of reference for when this element needs to move back). | |
$p = $e.prev(); | |
// Couldn't find anything? Means this element's already at the top, so bail. | |
if ($p.length == 0) | |
return; | |
// Move element to top of parent. | |
$e.prependTo($parent); | |
// Mark element as moved. | |
$e.data(key, $p); | |
} | |
// Moved already? | |
else { | |
// Condition is true? Bail. | |
if (condition) | |
return; | |
$p = $e.data(key); | |
// Move element back to its original location (using our placeholder). | |
$e.insertAfter($p); | |
// Unmark element as moved. | |
$e.removeData(key); | |
} | |
}); | |
}; | |
})(jQuery); |
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Apologies if this is a silly Q to ask, but I'm still rather new to all of this and would just like to add one tiny thing to fn.navList:
When one of the li items passed to this function has a class set like "current-page", for example, how can I emphasise the resulting this.text(), eg in bold or italic or a different colour?
It's easy to insert this into the b.push statement but I'm struggling on the if-then detection prior to doing so, because the this.find('a') returns only the href tokens, doesn't it?
Thanks for any hints/tips/pointers...