src/widgets/NoteTaking.js
changeset 1068 7623f9af9272
child 1072 ac1eacb3aa33
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/widgets/NoteTaking.js	Fri Oct 02 11:27:17 2015 +0200
@@ -0,0 +1,91 @@
+/* This widget displays a note-taking view, that can be saved to localStorage */
+
+IriSP.Widgets.NoteTaking = function(player, config) {
+    IriSP.Widgets.Widget.call(this, player, config);
+}
+
+IriSP.Widgets.NoteTaking.prototype = new IriSP.Widgets.Widget();
+
+IriSP.Widgets.NoteTaking.prototype.defaults = {
+    // Id that will be used as localStorage key
+    editable_storage: ""
+}
+
+IriSP.Widgets.NoteTaking.prototype.template = '<textarea class="Ldt-NoteTaking-Text"></textarea>';
+
+IriSP.Widgets.NoteTaking.prototype.draw = function() {
+    var widget = this;
+    var content;
+    var $ = IriSP.jQuery;
+
+    widget.renderTemplate();
+    content = widget.$.find('.Ldt-NoteTaking-Text');
+
+    function load_content() {
+        $(content).val(window.localStorage[widget.editable_storage]);
+    }
+    function save_content() {
+        window.localStorage[widget.editable_storage] = $(content).val();
+    }
+
+    // Load current transcript
+    if (window.localStorage[widget.editable_storage]) {
+        load_content();
+    }
+
+    // Thanks to http://stackoverflow.com/questions/4456545/how-to-insert-text-at-the-current-caret-position-in-a-textarea
+    $.fn.insertAtCaret = function(text) {
+        return this.each(function() {
+            if (this.selectionStart !== undefined) {
+                // mozilla/netscape support
+                var startPos = this.selectionStart,
+                    endPos = this.selectionEnd,
+                    scrollTop = this.scrollTop;
+                this.value = this.value.substring(0, startPos) + text + this.value.substring(endPos, this.value.length);
+                this.focus();
+                this.selectionStart = startPos + text.length;
+                this.selectionEnd = startPos + text.length;
+                this.scrollTop = scrollTop;
+            } else {
+                // IE input[type=text] and other browsers
+                this.value += text;
+                this.focus();
+                this.value = this.value;    // forces cursor to end
+            }
+        });
+    };
+
+    function getAroundCaret(el, length) {
+        // Return a selection of 2 * length characters around the caret
+        var startPos = el.selectionStart;
+        return el.value.substring(startPos - length, startPos + length);
+    };
+
+
+    $(content).keydown(function (_event) {
+        if (_event.keyCode == 13 && (_event.ctrlKey || _event.metaKey)) {
+            // Insert current timestamp
+            _event.preventDefault();
+            // Get current value
+            var match = /\[([\d:]+)\]/.exec(getAroundCaret(content[0], 8));
+            if (match) {
+                // Found a timecode. Go to position.
+                widget.media.setCurrentTime(IriSP.timestamp2ms(match[1]));
+            } else {
+                $(content).insertAtCaret("[" + (new IriSP.Model.Time(widget.media.getCurrentTime())).toString() + "]");
+                save_content();
+            }
+        }
+    }).on("input", function (_event) {
+        console.log("Change");
+        // Store updated value
+        save_content();
+    }).on("dblclick", function (_event) {
+            var match = /\[([\d:]+)\]/.exec(getAroundCaret(content[0], 8));
+            if (match) {
+                // Found a timecode. Go to position.
+                _event.preventDefault();
+                widget.media.setCurrentTime(IriSP.timestamp2ms(match[1]));
+            };
+    });
+};