refactor bookmarks into a self-contained javascript

htdocs/lib/bookmarks.js

@@ -0,0 +1,173 @@
+function BookmarkBar() {
+    var me = this;
+    me.localBookmarks = new BookmarkLocalStorage();
+    me.$container = $("#openwebrx-bookmarks-container");
+    me.bookmarks = {};
+
+    me.$container.on('click', '.bookmark', function(e){
+        var $bookmark = $(e.target).closest('.bookmark');
+        me.$container.find('.bookmark').removeClass('selected');
+        var b = $bookmark.data();
+        if (!b || !b.frequency || !b.modulation) return;
+        demodulator_set_offset_frequency(0, b.frequency - center_freq);
+        demodulator_analog_replace(b.modulation);
+        $bookmark.addClass('selected');
+    });
+
+    me.$container.on('click', '.action[data-action=edit]', function(e){
+        e.stopPropagation();
+        var $bookmark = $(e.target).closest('.bookmark');
+        me.showEditDialog($bookmark.data());
+    });
+
+    me.$container.on('click', '.action[data-action=delete]', function(e){
+        e.stopPropagation();
+        var $bookmark = $(e.target).closest('.bookmark');
+        me.localBookmarks.deleteBookmark($bookmark.data());
+        me.loadLocalBookmarks();
+    });
+
+    var $bookmarkButton = $('#openwebrx-panel-receiver .openwebrx-bookmark-button');
+    if (typeof(Storage) !== 'undefined') {
+        $bookmarkButton.show();
+    } else {
+        $bookmarkButton.hide();
+    }
+    $bookmarkButton.click(function(){
+        me.showEditDialog();
+    });
+
+    me.$dialog = $("#openwebrx-dialog-bookmark");
+    me.$dialog.find('.openwebrx-button[data-action=cancel]').click(function(){
+        me.$dialog.hide();
+    });
+    me.$dialog.find('.openwebrx-button[data-action=submit]').click(function(){
+        me.storeBookmark();
+    });
+    me.$dialog.find('form').on('submit', function(e){
+        e.preventDefault();
+        me.storeBookmark();
+    });
+}
+
+BookmarkBar.prototype.position = function(){
+    var range = get_visible_freq_range();
+    $('#openwebrx-bookmarks-container .bookmark').each(function(){
+        $(this).css('left', scale_px_from_freq($(this).data('frequency'), range));
+    });
+}
+
+BookmarkBar.prototype.loadLocalBookmarks = function(){
+    var bwh = bandwidth / 2;
+    var start = center_freq - bwh;
+    var end = center_freq + bwh;
+    var bookmarks = this.localBookmarks.getBookmarks().filter(function(b){
+        return b.frequency >= start && b.frequency <= end;
+    });
+    this.replace_bookmarks(bookmarks, 'local', true);
+}
+
+BookmarkBar.prototype.replace_bookmarks = function(bookmarks, source, editable) {
+    editable = !!editable;
+    bookmarks = bookmarks.map(function(b){
+        b.source = source;
+        b.editable = editable;
+        return b;
+    });
+    this.bookmarks[source] = bookmarks;
+    this.render();
+}
+
+BookmarkBar.prototype.render = function(){
+    var bookmarks = Object.values(this.bookmarks).reduce(function(l, v){ return l.concat(v); });
+    bookmarks = bookmarks.sort(function(a, b){ return a.frequency - b.frequency; });
+    var elements = bookmarks.map(function(b){
+        $bookmark = $(
+            '<div class="bookmark" data-source="' + b.source + '"' + (b.editable?' editable="editable"':'') + '>' +
+                '<div class="bookmark-actions">' +
+                    '<div class="openwebrx-button action" data-action="edit"><img src="static/gfx/openwebrx-edit.png"></div>' +
+                    '<div class="openwebrx-button action" data-action="delete"><img src="static/gfx/openwebrx-trashcan.png"></div>' +
+                '</div>' +
+                '<div class="bookmark-content">' + b.name + '</div>' +
+            '</div>'
+        );
+        $bookmark.data(b);
+        return $bookmark;
+    });
+    this.$container.find('.bookmark').remove();
+    this.$container.append(elements);
+	this.position();
+}
+
+BookmarkBar.prototype.showEditDialog = function(bookmark) {
+    var $form = this.$dialog.find("form");
+    if (!bookmark) {
+        bookmark = {
+            name: "",
+            frequency: center_freq + demodulators[0].offset_frequency,
+            modulation: demodulators[0].subtype
+        }
+    }
+    ['name', 'frequency', 'modulation'].forEach(function(key){
+        $form.find('#' + key).val(bookmark[key]);
+    });
+    this.$dialog.data('id', bookmark.id);
+    this.$dialog.show();
+    this.$dialog.find('#name').focus();
+}
+
+BookmarkBar.prototype.storeBookmark = function() {
+    var me = this;
+    var bookmark = {};
+    var valid = true;
+    ['name', 'frequency', 'modulation'].forEach(function(key){
+        var $input = me.$dialog.find('#' + key);
+        valid = valid && $input[0].checkValidity();
+        bookmark[key] = $input.val();
+    });
+    if (!valid) {
+        me.$dialog.find("form :submit").click();
+        return;
+    }
+    bookmark.frequency = Number(bookmark.frequency);
+
+    var bookmarks = me.localBookmarks.getBookmarks();
+
+    bookmark.id = me.$dialog.data('id');
+    if (!bookmark.id) {
+        if (bookmarks.length) {
+            bookmark.id = 1 + Math.max.apply(Math, bookmarks.map(function(b){ return b.id || 0; }));
+        } else {
+            bookmark.id = 1;
+        }
+    }
+
+    bookmarks = bookmarks.filter(function(b) { return b.id != bookmark.id; });
+    bookmarks.push(bookmark);
+
+    me.localBookmarks.setBookmarks(bookmarks);
+    me.loadLocalBookmarks();
+    me.$dialog.hide();
+}
+
+BookmarkLocalStorage = function(){
+}
+
+BookmarkLocalStorage.prototype.getBookmarks = function(){
+    return JSON.parse(window.localStorage.getItem("bookmarks")) || [];
+}
+
+BookmarkLocalStorage.prototype.setBookmarks = function(bookmarks){
+    window.localStorage.setItem("bookmarks", JSON.stringify(bookmarks));
+}
+
+BookmarkLocalStorage.prototype.deleteBookmark = function(data) {
+    if (data.id) data = data.id;
+    var bookmarks = this.getBookmarks();
+    bookmarks = bookmarks.filter(function(b) { return b.id != data; });
+    this.setBookmarks(bookmarks);
+}
+
+
+
+