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(function(window, angular, undefined){
'use strict';
var module = angular.module('nsPopover', []);
var $el = angular.element;
var isDef = angular.isDefined;
var forEach = angular.forEach;
/**
* Extends the destination objec 'dst' by copying all of the properties from the 'src' object(s)
* to 'dst'. Multiple src objects could be specified. 'undefined' values are not copied.
*
* @param {Object} dst The destination object.
* @param {Object} src The spurce object.
* @returns {Object} Reference to 'dst'.
*/
var extend_ = function extend(dst, src) {
forEach(arguments, function(obj) {
if (obj !== src) {
forEach(obj, function(value, key) {
if (isDef(value)) {
dst[key] = value;
}
});
}
});
};
module.directive('nsPopover', function($timeout, $templateCache, $q, $http, $compile, $document) {
return {
restrict: 'A',
link: function(scope, elm, attrs) {
var options = {
template: attrs.nsPopoverTemplate,
theme: attrs.nsPopoverTheme || 'ns-popover-default-theme',
plain: attrs.nsPopoverPlain,
trigger: attrs.nsPopoverTrigger || 'click',
container: attrs.nsPopoverContainer,
placement: attrs.nsPopoverPlacement || 'bottom|left'
};
var timeoutId_ = {};
var $container = $el(options.container);
if (!$container.length) {
$container = $document.find('body');
}
var $popover = $el('<div></div>');
var placement_;
var align_;
var match = options.placement
.match(/^(top|bottom|left|right)$|((top|bottom)\|(center|left|right)+)|((left|right)\|(center|top|bottom)+)/);
if (!match) {
throw new Error('"' + options.placement + '" is not a valid placement or has a invalid combination of placements.');
}
placement_ = match[6] || match[3] || match[1];
align_ = match[8] | match[4] || match[2] || 'center';
$q.when(loadTemplate(options.template, options.plain)).then(function(template) {
template = angular.isString(template) ?
template :
template.data && angular.isString(template.data) ?
template.data :
'';
$popover.html(template);
if (options.theme) {
$popover.addClass(options.theme);
}
$timeout(function() {
$compile($popover)(scope);
});
scope.$on('$destroy', function() {
$popover.remove();
});
$popover
.css('position', 'absolute')
.css('display', 'none');
$container.append($popover);
});
elm.on(options.trigger, function(e) {
e.preventDefault();
$timeout.cancel(timeoutId_);
$popover.css('display', 'block');
// position the popover accordingly to the defined placement around the
// |elm|.
move($popover, placement_, align_, elm[0].getBoundingClientRect());
// Hide the popover without delay on click events.
$popover.on('click', function() {
timeoutId_ = hide($popover, 0);
});
});
elm.on('mouseout', function() {
timeoutId_ = hide($popover);
});
$popover
.on('mouseout', function(e) {
timeoutId_ = hide($popover);
})
.on('mouseover', function() {
$timeout.cancel(timeoutId_);
});
/**
* Move the popover to the |placement| position of the object located on the |rect|.
*
* @param popover {Object} The popover object to be moved.
* @param placement {String} The relative position to move the popover - top | bottom | left | right.
* @param rect {ClientRect} The ClientRect of the object to move the popover around.
*/
function move(popover, placement, align, rect) {
var popoverRect = popover[0].getBoundingClientRect();
var top, left;
var positionX = function() {
if (align === 'center') {
return Math.round(rect.left + rect.width/2 - popoverRect.width/2);
} else {
return rect[align];
}
};
var positionY = function() {
if (align === 'center') {
return Math.round(rect.top + rect.height/2 - popoverRect.height/2);
} else {
return rect[align];
}
};
if (placement === 'top') {
top = rect.top - popoverRect.height - 1;
left = positionX();
} else if (placement === 'right') {
top = positionY();
left = rect.right +1;
} else if (placement === 'bottom') {
top = rect.bottom + 1;
left = positionX(align);
} else if (placement === 'left') {
top = positionY(align);
left = rect.left - popoverRect.width - 1;
}
popover
.css('top', top.toString() + 'px')
.css('left', left.toString() + 'px');
}
/**
* Set the display property of the popover to 'none' after |delay| milliseconds.
*
* @param popover {Object} The popover to set the display property.
* @param delay {Number} The time (in milliseconds) to wait before set the display property.
* @returns {Object|promise} A promise returned from the $timeout service that can be used
* to cancel the hiding operation.
*/
function hide(popover, delay) {
$timeout.cancel(timeoutId_);
// delay the hiding operation for 1.5s by default.
if (!isDef(delay)) {
delay = 1500;
}
return $timeout(function() {
popover.css('display', 'none');
}, delay);
}
/**
* Load the given template in the cache if it is not already loaded.
*
* @param template The URI of the template to be loaded.
* @returns {String} A promise that the template will be loaded.
* @remarks If the template is null or undefined a empty string will be returned.
*/
function loadTemplate(template, plain) {
if (!template) {
return '';
}
if (angular.isString(template) && plain) {
return template;
}
return $templateCache.get(template) || $http.get(template, { cache : true });
}
}
};
});
})(window, window.angular);
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