initial implementation of tree prefix

public/javascripts/dialogs/edit_tree_prefix.js

@@ -0,0 +1,58 @@
+"use strict";
+
+const editTreePrefix = (function() {
+    const dialogEl = $("#edit-tree-prefix-dialog");
+    const formEl = $("#edit-tree-prefix-form");
+    const treePrefixInputEl = $("#tree-prefix-input");
+    const noteTitleEl = $('#tree-prefix-note-title');
+
+    function showDialog() {
+        glob.activeDialog = dialogEl;
+
+        dialogEl.dialog({
+            modal: true,
+            width: 800
+        });
+
+        const currentNode = noteTree.getCurrentNode();
+
+        treePrefixInputEl.val(currentNode.data.prefix).focus();
+
+        const noteTitle = noteTree.getNoteTitle(currentNode.data.note_id);
+
+        noteTitleEl.html(noteTitle);
+    }
+
+    formEl.submit(() => {
+        const prefix = treePrefixInputEl.val();
+        const currentNode = noteTree.getCurrentNode();
+        const noteTreeId = currentNode.data.note_tree_id;
+
+        $.ajax({
+            url: baseApiUrl + 'tree/' + noteTreeId + '/setPrefix',
+            type: 'PUT',
+            contentType: 'application/json',
+            data: JSON.stringify({
+                prefix: prefix
+            }),
+            success: () => {
+                const noteTitle = noteTree.getNoteTitle(currentNode.data.note_id);
+
+                const title = (prefix ? (prefix + " - ") : "") + noteTitle;
+
+                currentNode.setTitle(title);
+            },
+            error: () => showError("Error setting prefix.")
+        });
+
+        dialogEl.dialog("close");
+
+        return false;
+    });
+
+    $(document).bind('keydown', 'alt+l', showDialog);
+
+    return {
+        showDialog
+    };
+})();