no msg

gitbook/plugins/gitbook-plugin-search/search.css

@@ -0,0 +1,27 @@
+.book .book-summary .book-search {
+  padding: 6px;
+  background: transparent;
+  position: absolute;
+  top: -50px;
+  left: 0px;
+  right: 0px;
+  transition: top 0.5s ease;
+}
+.book .book-summary .book-search input,
+.book .book-summary .book-search input:focus,
+.book .book-summary .book-search input:hover {
+  width: 100%;
+  background: transparent;
+  border: 1px solid transparent;
+  box-shadow: none;
+  outline: none;
+  line-height: 22px;
+  padding: 7px 4px;
+  color: inherit;
+}
+.book.with-search .book-summary .book-search {
+  top: 0px;
+}
+.book.with-search .book-summary ul.summary {
+  top: 50px;
+}

gitbook/plugins/gitbook-plugin-search/search.js

@@ -0,0 +1,135 @@
+require([
+    "gitbook",
+    "lodash"
+], function(gitbook, _) {
+    var index = null;
+    var $searchInput, $searchForm;
+
+    // Use a specific index
+    function loadIndex(data) {
+        index = lunr.Index.load(data);
+    }
+
+    // Fetch the search index
+    function fetchIndex() {
+        $.getJSON(gitbook.state.basePath+"/search_index.json")
+        .then(loadIndex);
+    }
+
+    // Search for a term and return results
+    function search(q) {
+        if (!index) return;
+
+        var results = _.chain(index.search(q))
+        .map(function(result) {
+            var parts = result.ref.split("#")
+            return {
+                path: parts[0],
+                hash: parts[1]
+            }
+        })
+        .value();
+
+        return results;
+    }
+
+    // Create search form
+    function createForm(value) {
+        if ($searchForm) $searchForm.remove();
+
+        $searchForm = $('<div>', {
+            'class': 'book-search',
+            'role': 'search'
+        });
+
+        $searchInput = $('<input>', {
+            'type': 'text',
+            'class': 'form-control',
+            'val': value,
+            'placeholder': 'Type to search'
+        });
+
+        $searchInput.appendTo($searchForm);
+        $searchForm.prependTo(gitbook.state.$book.find('.book-summary'));
+    }
+
+    // Return true if search is open
+    function isSearchOpen() {
+        return gitbook.state.$book.hasClass("with-search");
+    }
+
+    // Toggle the search
+    function toggleSearch(_state) {
+        if (isSearchOpen() === _state) return;
+
+        gitbook.state.$book.toggleClass("with-search", _state);
+
+        // If search bar is open: focus input
+        if (isSearchOpen()) {
+            gitbook.sidebar.toggle(true);
+            $searchInput.focus();
+        } else {
+            $searchInput.blur();
+            $searchInput.val("");
+            gitbook.sidebar.filter(null);
+        }
+    }
+
+    // Recover current search when page changed
+    function recoverSearch() {
+        var keyword = gitbook.storage.get("keyword", "");
+
+        createForm(keyword);
+
+        if (keyword.length > 0) {
+            if(!isSearchOpen()) {
+                toggleSearch();
+            }
+            gitbook.sidebar.filter(_.pluck(search(keyword), "path"));
+        }
+    };
+
+
+    gitbook.events.bind("start", function(config) {
+        // Pre-fetch search index and create the form
+        fetchIndex();
+        createForm();
+
+        // Type in search bar
+        $(document).on("keyup", ".book-search input", function(e) {
+            var key = (e.keyCode ? e.keyCode : e.which);
+            var q = $(this).val();
+
+            if (key == 27) {
+                e.preventDefault();
+                toggleSearch(false);
+                return;
+            }
+            if (q.length == 0) {
+                gitbook.sidebar.filter(null);
+                gitbook.storage.remove("keyword");
+            } else {
+                var results = search(q);
+                gitbook.sidebar.filter(
+                    _.pluck(results, "path")
+                );
+                gitbook.storage.set("keyword", q);
+            }
+        });
+
+        // Create the toggle search button
+        gitbook.toolbar.createButton({
+            icon: 'fa fa-search',
+            label: 'Search',
+            position: 'left',
+            onClick: toggleSearch
+        });
+
+        // Bind keyboard to toggle search
+        gitbook.keyboard.bind(['f'], toggleSearch)
+    });
+
+    gitbook.events.bind("page.change", recoverSearch);
+});
+
+