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Diffstat (limited to 'templates/docs/default.js')
| -rw-r--r-- | templates/docs/default.js | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/templates/docs/default.js b/templates/docs/default.js new file mode 100644 index 000000000..4be99c98e --- /dev/null +++ b/templates/docs/default.js @@ -0,0 +1,155 @@ +/* + * Copyright 2012 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +$(document).ready(function() { + prettyPrint(); + preventParentScrolls('nav'); + + var sluggify_ = function(s) { + return (s || '').replace(/ /g, '-').replace(/[^\w-]/g, '').toLowerCase(); + }; + + $('h2, h3, h4.includetoc').each(function() { + $(this).attr('id', 'toc_' + sluggify_($(this).data('tocid') || $(this).data('toctitle') || $(this).text())); + $(this).click(function() { + smoothScrollToId($(this).attr('id')); + }); + }); + + var buildNav_ = function(queries, $contentRoot, $navRoot) { + if (!queries || !queries.length) { + return; + } + + $contentRoot.find(queries[0]).each(function() { + var $navNode = $('<div>') + .text($(this).html()) + .appendTo($navRoot); + buildNav_(queries.splice(1), $(this), $navNode); + }); + }; + + buildNav(); +}); + +function buildNav() { + var currentLevel = 2; + var $currentParent = $('nav'); + var $currentNode = null; + + $('#page-content').find('h2, h3, h4.includetoc').each(function() { + var level = $(this).get(0).tagName.substring(1); + + if (level < currentLevel) { + // ascend + for (var i = 0; i < (currentLevel - level); i++) { + $currentParent = $currentParent.parents('div.children, nav').first(); + } + + } else if (level > currentLevel) { + // descend + $currentParent = $('<div>') + .addClass('children') + .appendTo($currentNode); + } + + var tocId = $(this).attr('id'); + var navId = tocId.replace(/toc_/, 'nav_'); + + $interactionNode = $('<span>') + .html($(this).data('toctitle') || $(this).html()) + .data('target', tocId) + .click(function() { + smoothScrollToId($(this).data('target')); + }); + + $currentNode = $('<div>') + .attr('id', navId) + .addClass('item') + .append($interactionNode) + .appendTo($currentParent); + + currentLevel = level; + }); + + var headerPositionCache = []; + var rebuildHeaderPositionCache_ = function() { + headerPositionCache = []; + $('#page-content').find('h2, h3, h4.includetoc').each(function() { + headerPositionCache.push({ + id: $(this).attr('id').replace(/toc_/, 'nav_'), + top: $(this).offset().top + }); + }); + }; + + var updateSelectedNavPosition_ = function() { + $('nav .item').removeClass('selected'); + var scrollTop = $(window).scrollTop(); + for (var i = headerPositionCache.length - 1; i >= 0; i--) { + if (scrollTop >= headerPositionCache[i].top) { + $('#' + headerPositionCache[i].id).addClass('selected'); + break; + } + } + }; + + rebuildHeaderPositionCache_(); + $(window).resize(function() { + rebuildHeaderPositionCache_(); + updateSelectedNavPosition_(); + }); + + $(window).scroll(function() { + updateSelectedNavPosition_(); + }); +} + +function smoothScrollToId(id) { + var $target = $('#' + id); + $('body').animate({ scrollTop: $target.offset().top }, 200, 'swing', function() { + document.location.hash = id; + }); +} + +// Based on http://stackoverflow.com/questions/5802467/prevent-scrolling-of-parent-element +function preventParentScrolls($el) { + $($el).on('DOMMouseScroll mousewheel', function(ev) { + var $this = $(this), + scrollTop = this.scrollTop, + scrollHeight = this.scrollHeight, + height = $this.height(), + delta = (ev.type == 'DOMMouseScroll' ? + ev.originalEvent.detail * -40 : + ev.originalEvent.wheelDelta), + up = delta > 0; + + if (!up && -delta > scrollHeight - height - scrollTop) { + // Scrolling down, but this will take us past the bottom. + $this.scrollTop(scrollHeight); + } else if (up && delta > scrollTop) { + // Scrolling up, but this will take us past the top. + $this.scrollTop(0); + } else { + $this.scrollTop(scrollTop - delta); + } + + ev.stopPropagation(); + ev.preventDefault(); + ev.returnValue = false; + return false; + }); +}
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