Search: Fix scroll-to-top on escape (unmark). Rearrange javascript and add comments
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Phaiax
parent
66ae6b6e92
commit
fa88440e7e
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@ -2,8 +2,8 @@ $( document ).ready(function() {
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// Search functionality
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//
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// Usage: call init() on startup. You can use hasFocus() to disable prevent keyhandling
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// while the user is typing his search.
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// Usage: call init() on startup. You can use !hasFocus() to prevent keyhandling in your key
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// event handlers while the user is typing his search.
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var search = {
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searchbar : $('#searchbar'),
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searchbar_outer : $('#searchbar-outer'),
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@ -25,10 +25,10 @@ $( document ).ready(function() {
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breadcrumbs: {boost: 0}
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}
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},
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mark_exclude : [], // ['.hljs']
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mark_exclude : [],
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current_searchterm : "",
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SEARCH_PARAM : 'search',
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MARK_PARAM : 'highlight',
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URL_SEARCH_PARAM : 'search',
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URL_MARK_PARAM : 'highlight',
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SEARCH_HOTKEY_KEYCODE: 83,
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ESCAPE_KEYCODE: 27,
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@ -36,16 +36,8 @@ $( document ).ready(function() {
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UP_KEYCODE: 38,
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SELECT_KEYCODE: 13,
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formatSearchMetric : function(count, searchterm) {
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if (count == 1) {
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return count + " search result for '" + searchterm + "':";
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} else if (count == 0) {
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return "No search results for '" + searchterm + "'.";
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} else {
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return count + " search results for '" + searchterm + "':";
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}
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}
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,
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// Helper to parse a url into its building blocks.
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parseURL : function (url) {
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var a = document.createElement('a');
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a.href = url;
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@ -71,6 +63,7 @@ $( document ).ready(function() {
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};
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}
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,
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// Helper to recreate a url string from its building blocks.
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renderURL : function (urlobject) {
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var url = urlobject.protocol + "://" + urlobject.host;
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if (urlobject.port != "") {
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@ -90,6 +83,7 @@ $( document ).ready(function() {
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return url;
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}
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,
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// Helper to escape html special chars for displaying the teasers
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escapeHTML: (function() {
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var MAP = {
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'&': '&',
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@ -104,18 +98,27 @@ $( document ).ready(function() {
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};
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})()
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,
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formatSearchMetric : function(count, searchterm) {
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if (count == 1) {
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return count + " search result for '" + searchterm + "':";
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} else if (count == 0) {
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return "No search results for '" + searchterm + "'.";
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} else {
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return count + " search results for '" + searchterm + "':";
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}
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}
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,
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formatSearchResult : function (result, searchterms) {
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// Show text around first occurrence of first search term.
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var teaser = this.makeTeaser(this.escapeHTML(result.doc.body), searchterms);
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// The ?MARK_PARAM= parameter belongs inbetween the page and the #heading-anchor
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// The ?URL_MARK_PARAM= parameter belongs inbetween the page and the #heading-anchor
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var url = result.ref.split("#");
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if (url.length == 1) {
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if (url.length == 1) { // no anchor found
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url.push("");
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}
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return $('<li><a href="'
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+ url[0] + '?' + this.MARK_PARAM + '=' + searchterms + '#' + url[1]
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+ url[0] + '?' + this.URL_MARK_PARAM + '=' + searchterms + '#' + url[1]
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+ '">' + result.doc.breadcrumbs + '</a>' // doc.title
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+ '<span class="breadcrumbs">' + '</span>'
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+ '<span class="teaser">' + teaser + '</span>'
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@ -216,55 +219,6 @@ $( document ).ready(function() {
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return teaser_split.join('');
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}
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,
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doSearch : function (searchterm) {
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// Don't search the same twice
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if (this.current_searchterm == searchterm) { return; }
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else { this.current_searchterm = searchterm; }
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if (this.searchindex == null) { return; }
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// Do the actual search
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var results = this.searchindex.search(searchterm, this.searchoptions);
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var resultcount = Math.min(results.length, this.searchoptions.limit_results);
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// Display search metrics
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this.searchresults_header.text(this.formatSearchMetric(resultcount, searchterm));
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// Clear and insert results
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var searchterms = searchterm.split(' ');
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this.searchresults.empty();
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for(var i = 0; i < resultcount ; i++){
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this.searchresults.append(this.formatSearchResult(results[i], searchterms));
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}
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// Display and scroll to results
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this.searchresults_outer.slideDown();
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// this.searchicon.scrollTop(0);
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}
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,
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doSearchOrMarkFromUrl : function () {
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// Check current URL for search request
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var url = this.parseURL(window.location.href);
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if (url.params.hasOwnProperty(this.SEARCH_PARAM)
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&& url.params[this.SEARCH_PARAM] != "") {
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this.searchbar_outer.slideDown();
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this.searchbar[0].value = decodeURIComponent(
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(url.params[this.SEARCH_PARAM]+'').replace(/\+/g, '%20'));
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this.searchbarKeyUpHandler();
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} else {
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this.searchbar_outer.slideUp();
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}
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if (url.params.hasOwnProperty(this.MARK_PARAM)) {
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var words = url.params[this.MARK_PARAM].split(' ');
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var header = $('#' + url.hash);
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this.content.mark(words, {
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exclude : this.mark_exclude
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});
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}
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}
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,
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init : function () {
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var this_ = this;
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@ -296,6 +250,38 @@ $( document ).ready(function() {
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return this.searchbar.is(':focus');
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}
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,
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unfocusSearchbar : function () {
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// hacky, but just focusing a div only works once
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var tmp = $('<input style="position: absolute; opacity: 0;">');
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tmp.insertAfter(this.searchicon);
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tmp.focus();
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tmp.remove();
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}
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,
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// On reload or browser history backwards/forwards events, parse the url and do search or mark
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doSearchOrMarkFromUrl : function () {
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// Check current URL for search request
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var url = this.parseURL(window.location.href);
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if (url.params.hasOwnProperty(this.URL_SEARCH_PARAM)
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&& url.params[this.URL_SEARCH_PARAM] != "") {
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this.searchbar_outer.slideDown();
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this.searchbar[0].value = decodeURIComponent(
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(url.params[this.URL_SEARCH_PARAM]+'').replace(/\+/g, '%20'));
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this.searchbarKeyUpHandler(); // -> doSearch()
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} else {
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this.searchbar_outer.slideUp();
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}
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if (url.params.hasOwnProperty(this.URL_MARK_PARAM)) {
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var words = url.params[this.URL_MARK_PARAM].split(' ');
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var header = $('#' + url.hash);
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this.content.mark(words, {
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exclude : this.mark_exclude
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});
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}
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}
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,
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// Eventhandler for keyevents on `document`
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globalKeyHandler : function (e) {
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if (e.altKey || e.ctrlKey || e.metaKey || e.shiftKey) { return; }
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@ -304,8 +290,10 @@ $( document ).ready(function() {
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this.searchbar.removeClass("active");
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// this.searchbar[0].value = "";
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this.setSearchUrlParameters("",
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(this.searchbar[0].value.trim() != 0) ? "push" : "replace");
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this.unfocusSearchbar();
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(this.searchbar[0].value.trim() != "") ? "push" : "replace");
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if (this.hasFocus()) {
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this.unfocusSearchbar();
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}
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this.searchbar_outer.slideUp();
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this.content.unmark();
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return;
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@ -349,21 +337,13 @@ $( document ).ready(function() {
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}
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}
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,
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unfocusSearchbar : function () {
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// hacky, but just focusing a div only works once
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var tmp = $('<input style="position: absolute; opacity: 0;">');
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tmp.insertAfter(this.searchicon);
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tmp.focus();
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tmp.remove();
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}
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,
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// Eventhandler for search icon
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searchIconClickHandler : function () {
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this.searchbar_outer.slideToggle();
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this.searchbar.focus();
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// TODO:
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// If invisible, clear URL search parameter
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}
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,
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// Eventhandler for keyevents while the searchbar is focused
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searchbarKeyUpHandler : function () {
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var searchterm = this.searchbar[0].value.trim();
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if (searchterm != "") {
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@ -375,32 +355,61 @@ $( document ).ready(function() {
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this.searchresults.empty();
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}
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this.setSearchUrlParameters(searchterm, "if_begin_search");
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this.setSearchUrlParameters(searchterm, "push_if_new_search_else_replace");
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// Remove marks
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this.content.unmark();
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}
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,
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// Update current url with ?URL_SEARCH_PARAM= parameter, remove ?URL_MARK_PARAM and #heading-anchor .
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// `action` can be one of "push", "replace", "push_if_new_search_else_replace"
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// and replaces or pushes a new browser history item.
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// "push_if_new_search_else_replace" pushes if there is no `?URL_SEARCH_PARAM=abc` yet.
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setSearchUrlParameters : function(searchterm, action) {
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// Update url with ?SEARCH_PARAM= parameter, remove ?MARK_PARAM and #heading-anchor
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var url = this.parseURL(window.location.href);
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var first_search = ! url.params.hasOwnProperty(this.SEARCH_PARAM);
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if (searchterm != "" || action == "if_begin_search") {
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url.params[this.SEARCH_PARAM] = searchterm;
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delete url.params[this.MARK_PARAM];
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var first_search = ! url.params.hasOwnProperty(this.URL_SEARCH_PARAM);
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if (searchterm != "" || action == "push_if_new_search_else_replace") {
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url.params[this.URL_SEARCH_PARAM] = searchterm;
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delete url.params[this.URL_MARK_PARAM];
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url.hash = "";
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} else {
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delete url.params[this.SEARCH_PARAM];
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delete url.params[this.URL_SEARCH_PARAM];
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}
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// A new search will also add a new history item, so the user can go back
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// to the page prior to searching. A updated search term will only replace
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// the url.
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if (action == "push" || (action == "if_begin_search" && first_search) ) {
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if (action == "push" || (action == "push_if_new_search_else_replace" && first_search) ) {
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history.pushState({}, document.title, this.renderURL(url));
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} else if (action == "replace" || (action == "if_begin_search" && !first_search) ) {
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} else if (action == "replace" || (action == "push_if_new_search_else_replace" && !first_search) ) {
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history.replaceState({}, document.title, this.renderURL(url));
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}
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}
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,
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doSearch : function (searchterm) {
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// Don't search the same twice
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if (this.current_searchterm == searchterm) { return; }
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else { this.current_searchterm = searchterm; }
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if (this.searchindex == null) { return; }
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// Do the actual search
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var results = this.searchindex.search(searchterm, this.searchoptions);
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var resultcount = Math.min(results.length, this.searchoptions.limit_results);
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// Display search metrics
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this.searchresults_header.text(this.formatSearchMetric(resultcount, searchterm));
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// Clear and insert results
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var searchterms = searchterm.split(' ');
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this.searchresults.empty();
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for(var i = 0; i < resultcount ; i++){
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this.searchresults.append(this.formatSearchResult(results[i], searchterms));
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}
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// Display and scroll to results
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this.searchresults_outer.slideDown();
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// this.searchicon.scrollTop(0);
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}
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};
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