diff --git a/src/lib/jquery.menu-aim.js b/src/lib/jquery.menu-aim.js index 471053400..b8dadf9b5 100644 --- a/src/lib/jquery.menu-aim.js +++ b/src/lib/jquery.menu-aim.js @@ -69,255 +69,255 @@ * * https://github.com/kamens/jQuery-menu-aim */ -(function($) { +(function ($) { - $.fn.menuAim = function(opts) { - // Initialize menu-aim for all elements in jQuery collection - this.each(function() { - init.call(this, opts); - }); + $.fn.menuAim = function (opts) { + // Initialize menu-aim for all elements in jQuery collection + this.each(function () { + init.call(this, opts); + }); - return this; - }; + return this; + }; - function init(opts) { - var $menu = $(this), - activeRow = null, - mouseLocs = [], - lastDelayLoc = null, - timeoutId = null, - options = $.extend({ - rowSelector: "> li", - submenuSelector: "*", - submenuDirection: $.noop, - tolerance: 75, // bigger = more forgivey when entering submenu - enter: $.noop, - exit: $.noop, - activate: $.noop, - deactivate: $.noop, - exitMenu: $.noop - }, opts); + function init(opts) { + var $menu = $(this), + activeRow = null, + mouseLocs = [], + lastDelayLoc = null, + timeoutId = null, + options = $.extend({ + rowSelector: "> li", + submenuSelector: "*", + submenuDirection: $.noop, + tolerance: 75, // bigger = more forgivey when entering submenu + enter: $.noop, + exit: $.noop, + activate: $.noop, + deactivate: $.noop, + exitMenu: $.noop + }, opts); - var MOUSE_LOCS_TRACKED = 3, // number of past mouse locations to track - DELAY = 300; // ms delay when user appears to be entering submenu + var MOUSE_LOCS_TRACKED = 3, // number of past mouse locations to track + DELAY = 300; // ms delay when user appears to be entering submenu - /** - * Keep track of the last few locations of the mouse. - */ - var mousemoveDocument = function(e) { - mouseLocs.push({x: e.pageX, y: e.pageY}); + /** + * Keep track of the last few locations of the mouse. + */ + var mousemoveDocument = function (e) { + mouseLocs.push({ x: e.pageX, y: e.pageY }); - if (mouseLocs.length > MOUSE_LOCS_TRACKED) { - mouseLocs.shift(); - } - }; + if (mouseLocs.length > MOUSE_LOCS_TRACKED) { + mouseLocs.shift(); + } + }; - /** - * Cancel possible row activations when leaving the menu entirely - */ - var mouseleaveMenu = function() { - if (timeoutId) { - clearTimeout(timeoutId); - } + /** + * Cancel possible row activations when leaving the menu entirely + */ + var mouseleaveMenu = function () { + if (timeoutId) { + clearTimeout(timeoutId); + } - // If exitMenu is supplied and returns true, deactivate the - // currently active row on menu exit. - if (options.exitMenu(this)) { - if (activeRow) { - options.deactivate(activeRow); - } + // If exitMenu is supplied and returns true, deactivate the + // currently active row on menu exit. + if (options.exitMenu(this)) { + if (activeRow) { + options.deactivate(activeRow); + } - activeRow = null; - } - }; + activeRow = null; + } + }; - /** - * Trigger a possible row activation whenever entering a new row. - */ - var mouseenterRow = function() { - if (timeoutId) { - // Cancel any previous activation delays - clearTimeout(timeoutId); - } + /** + * Trigger a possible row activation whenever entering a new row. + */ + var mouseenterRow = function () { + if (timeoutId) { + // Cancel any previous activation delays + clearTimeout(timeoutId); + } - options.enter(this); - possiblyActivate(this); - }, - mouseleaveRow = function() { - options.exit(this); - }; + options.enter(this); + possiblyActivate(this); + }, + mouseleaveRow = function () { + options.exit(this); + }; - /* - * Immediately activate a row if the user clicks on it. - */ - var clickRow = function() { - activate(this); - }; + /* + * Immediately activate a row if the user clicks on it. + */ + var clickRow = function () { + activate(this); + }; - /** - * Activate a menu row. - */ - var activate = function(row) { - if (row == activeRow) { - return; - } + /** + * Activate a menu row. + */ + var activate = function (row) { + if (row == activeRow) { + return; + } - if (activeRow) { - options.deactivate(activeRow); - } + if (activeRow) { + options.deactivate(activeRow); + } - options.activate(row); - activeRow = row; - }; + options.activate(row); + activeRow = row; + }; - /** - * Possibly activate a menu row. If mouse movement indicates that we - * shouldn't activate yet because user may be trying to enter - * a submenu's content, then delay and check again later. - */ - var possiblyActivate = function(row) { - var delay = activationDelay(); + /** + * Possibly activate a menu row. If mouse movement indicates that we + * shouldn't activate yet because user may be trying to enter + * a submenu's content, then delay and check again later. + */ + var possiblyActivate = function (row) { + var delay = activationDelay(); - if (delay) { - timeoutId = setTimeout(function() { - possiblyActivate(row); - }, delay); - } else { - activate(row); - } - }; + if (delay) { + timeoutId = setTimeout(function () { + possiblyActivate(row); + }, delay); + } else { + activate(row); + } + }; - /** - * Return the amount of time that should be used as a delay before the - * currently hovered row is activated. - * - * Returns 0 if the activation should happen immediately. Otherwise, - * returns the number of milliseconds that should be delayed before - * checking again to see if the row should be activated. - */ - var activationDelay = function() { - if (!activeRow || !$(activeRow).is(options.submenuSelector)) { - // If there is no other submenu row already active, then - // go ahead and activate immediately. - return 0; - } + /** + * Return the amount of time that should be used as a delay before the + * currently hovered row is activated. + * + * Returns 0 if the activation should happen immediately. Otherwise, + * returns the number of milliseconds that should be delayed before + * checking again to see if the row should be activated. + */ + var activationDelay = function () { + if (!activeRow || !$(activeRow).is(options.submenuSelector)) { + // If there is no other submenu row already active, then + // go ahead and activate immediately. + return 0; + } - var offset = $menu.offset(), - upperLeft = { - x: offset.left, - y: offset.top - options.tolerance - }, - upperRight = { - x: offset.left + $menu.outerWidth(), - y: upperLeft.y - }, - lowerLeft = { - x: offset.left, - y: offset.top + $menu.outerHeight() + options.tolerance - }, - lowerRight = { - x: offset.left + $menu.outerWidth(), - y: lowerLeft.y - }, - loc = mouseLocs[mouseLocs.length - 1], - prevLoc = mouseLocs[0]; + var offset = $menu.offset(), + upperLeft = { + x: offset.left, + y: offset.top - options.tolerance + }, + upperRight = { + x: offset.left + $menu.outerWidth(), + y: upperLeft.y + }, + lowerLeft = { + x: offset.left, + y: offset.top + $menu.outerHeight() + options.tolerance + }, + lowerRight = { + x: offset.left + $menu.outerWidth(), + y: lowerLeft.y + }, + loc = mouseLocs[mouseLocs.length - 1], + prevLoc = mouseLocs[0]; - if (!loc) { - return 0; - } + if (!loc) { + return 0; + } - if (!prevLoc) { - prevLoc = loc; - } + if (!prevLoc) { + prevLoc = loc; + } - if (prevLoc.x < offset.left || prevLoc.x > lowerRight.x || - prevLoc.y < offset.top || prevLoc.y > lowerRight.y) { - // If the previous mouse location was outside of the entire - // menu's bounds, immediately activate. - return 0; - } + if (prevLoc.x < offset.left || prevLoc.x > lowerRight.x || + prevLoc.y < offset.top || prevLoc.y > lowerRight.y) { + // If the previous mouse location was outside of the entire + // menu's bounds, immediately activate. + return 0; + } - if (lastDelayLoc && - loc.x == lastDelayLoc.x && loc.y == lastDelayLoc.y) { - // If the mouse hasn't moved since the last time we checked - // for activation status, immediately activate. - return 0; - } + if (lastDelayLoc && + loc.x == lastDelayLoc.x && loc.y == lastDelayLoc.y) { + // If the mouse hasn't moved since the last time we checked + // for activation status, immediately activate. + return 0; + } - // Detect if the user is moving towards the currently activated - // submenu. - // - // If the mouse is heading relatively clearly towards - // the submenu's content, we should wait and give the user more - // time before activating a new row. If the mouse is heading - // elsewhere, we can immediately activate a new row. - // - // We detect this by calculating the slope formed between the - // current mouse location and the upper/lower right points of - // the menu. We do the same for the previous mouse location. - // If the current mouse location's slopes are - // increasing/decreasing appropriately compared to the - // previous's, we know the user is moving toward the submenu. - // - // Note that since the y-axis increases as the cursor moves - // down the screen, we are looking for the slope between the - // cursor and the upper right corner to decrease over time, not - // increase (somewhat counterintuitively). - function slope(a, b) { - return (b.y - a.y) / (b.x - a.x); - }; + // Detect if the user is moving towards the currently activated + // submenu. + // + // If the mouse is heading relatively clearly towards + // the submenu's content, we should wait and give the user more + // time before activating a new row. If the mouse is heading + // elsewhere, we can immediately activate a new row. + // + // We detect this by calculating the slope formed between the + // current mouse location and the upper/lower right points of + // the menu. We do the same for the previous mouse location. + // If the current mouse location's slopes are + // increasing/decreasing appropriately compared to the + // previous's, we know the user is moving toward the submenu. + // + // Note that since the y-axis increases as the cursor moves + // down the screen, we are looking for the slope between the + // cursor and the upper right corner to decrease over time, not + // increase (somewhat counterintuitively). + function slope(a, b) { + return (b.y - a.y) / (b.x - a.x); + }; - var decreasingCorner = upperRight, - increasingCorner = lowerRight; + var decreasingCorner = upperRight, + increasingCorner = lowerRight; - // Our expectations for decreasing or increasing slope values - // depends on which direction the submenu opens relative to the - // main menu. By default, if the menu opens on the right, we - // expect the slope between the cursor and the upper right - // corner to decrease over time, as explained above. If the - // submenu opens in a different direction, we change our slope - // expectations. - if (options.submenuDirection() == "left") { - decreasingCorner = lowerLeft; - increasingCorner = upperLeft; - } else if (options.submenuDirection() == "below") { - decreasingCorner = lowerRight; - increasingCorner = lowerLeft; - } else if (options.submenuDirection() == "above") { - decreasingCorner = upperLeft; - increasingCorner = upperRight; - } + // Our expectations for decreasing or increasing slope values + // depends on which direction the submenu opens relative to the + // main menu. By default, if the menu opens on the right, we + // expect the slope between the cursor and the upper right + // corner to decrease over time, as explained above. If the + // submenu opens in a different direction, we change our slope + // expectations. + if (options.submenuDirection() == "left") { + decreasingCorner = lowerLeft; + increasingCorner = upperLeft; + } else if (options.submenuDirection() == "below") { + decreasingCorner = lowerRight; + increasingCorner = lowerLeft; + } else if (options.submenuDirection() == "above") { + decreasingCorner = upperLeft; + increasingCorner = upperRight; + } - var decreasingSlope = slope(loc, decreasingCorner), - increasingSlope = slope(loc, increasingCorner), - prevDecreasingSlope = slope(prevLoc, decreasingCorner), - prevIncreasingSlope = slope(prevLoc, increasingCorner); + var decreasingSlope = slope(loc, decreasingCorner), + increasingSlope = slope(loc, increasingCorner), + prevDecreasingSlope = slope(prevLoc, decreasingCorner), + prevIncreasingSlope = slope(prevLoc, increasingCorner); - if (decreasingSlope < prevDecreasingSlope && - increasingSlope > prevIncreasingSlope) { - // Mouse is moving from previous location towards the - // currently activated submenu. Delay before activating a - // new menu row, because user may be moving into submenu. - lastDelayLoc = loc; - return DELAY; - } + if (decreasingSlope < prevDecreasingSlope && + increasingSlope > prevIncreasingSlope) { + // Mouse is moving from previous location towards the + // currently activated submenu. Delay before activating a + // new menu row, because user may be moving into submenu. + lastDelayLoc = loc; + return DELAY; + } - lastDelayLoc = null; - return 0; - }; + lastDelayLoc = null; + return 0; + }; - /** - * Hook up initial menu events - */ - $menu - .mouseleave(mouseleaveMenu) - .find(options.rowSelector) - .mouseenter(mouseenterRow) - .mouseleave(mouseleaveRow) - .click(clickRow); + /** + * Hook up initial menu events + */ + $menu + .mouseleave(mouseleaveMenu) + .find(options.rowSelector) + .mouseenter(mouseenterRow) + .mouseleave(mouseleaveRow) + .click(clickRow); - $(document).mousemove(mousemoveDocument); + $(document).mousemove(mousemoveDocument); - }; + }; })(jQuery); \ No newline at end of file