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index.html
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<html>
<head>
<script type='text/javascript' src='jquery-1.6.2.min.js'></script>
<script type='text/javascript' src='jquery.tmpl.js'></script>
<script type='text/javascript' src='jquery.jkey-1.2.js'></script>
<style>
#editor {border: 0px; position: absolute; font-size: 1.0em;}
li, .node{font-size: 1.0em;}
</style>
</head>
<body>
<!-- Nodes -->
<form onSubmit="return false;">
<input id="editor"/>
</form>
<script type="text/html" id="pageTemplate">
<h1>${name}</h1>
<ul>
{{tmpl(nodes) "#nodeTemplate"}}
</ul>
</script>
<script type="text/html" id="nodeTemplate">
<li class="node">
<span>${name}</span>
<ul>
{{tmpl(nodes) "#nodeTemplate"}}
</ul>
</li>
</script>
</body>
<script lang='text/javascript'>
function edit_node(node){
if(node === undefined || node.length == 0) return;
var txt = node_text(node);
window.current_node = node;
$("#editor")[0].value = txt;
$("#editor").focus();
move_editor_to_node(node);
};
function node_text(node){
return node.children("span").text();
};
function set_node_text(node, text){
return node.children("span").text(text);
};
function swap_with_next(node){
node.insertAfter(node.next());
move_editor_to_node(node);
};
function swap_with_previous(node){
node.prev().insertAfter(node);
move_editor_to_node(node);
};
function next(node){
// return node.next();
if(node.length === 0) return null
return $(node.next()[0] || next(node.parents(".node").first()));
};
function prev(node){
// return node.prev();
return $(node.prev()[0] || node.parents(".node").first());
};
function outdent(node){
node.insertAfter(parent_node(node));
move_editor_to_node(node);
};
function indent(node){
node.appendTo(items(node.prev()));
move_editor_to_node(node);
};
function remove(node){
edit_node(node.prev() || node.next());
node.remove();
};
function parent_node(node){
return node.parents(".node").first()
};
function items(node){
return node.children("ul");
};
function add_sibling(node){
return create_node().insertAfter(node);
};
function create_node(){
return $( "#nodeTemplate" ).tmpl( {name: "", nodes: []} );
};
<!---- end of node methods ---->
// enter => add following sibling
// ctrl up => swap with prev
// ctrl down => swap with next
// ctrl right => indent
// ctrl left => outdent
/// backspace empty textbox => remove
$("#editor").jkey('enter', function(){
edit_node(add_sibling(window.current_node));
}).jkey('backspace', true, function(){
if(this.value.length == 0) {
remove(window.current_node);
return false;
};
return true;
});
$(document).keydown(function(event){
if(event.ctrlKey){
if(event.keyCode == 37){ // left
outdent(window.current_node);
return false;
};
if(event.keyCode == 39){ // right
indent(window.current_node);
return false;
};
if(event.keyCode == 40){ // down
swap_with_next(window.current_node);
return false;
};
if(event.keyCode == 38){ // up
swap_with_previous(window.current_node);
return false;
};
}
else if(event.altKey){
if(event.keyCode == 37){ // left
edit_node( parent_node(window.current_node));
return false;
};
if(event.keyCode == 39){ // right
edit_node(window.current_node.find(".node").first());
return false;
};
if(event.keyCode == 40){ // down
edit_node(next(window.current_node));
return false;
};
if(event.keyCode == 38){ // up
edit_node(prev(window.current_node));
return false;
};
};
});
function move_editor_to_node(node){
var p = node.position();
$("#editor").css("top",p.top -2).css("left", p.left - 2);
};
function on_span_clicked(){
edit_node($(this).parent());
};
function set_editor_width_from_node(node){
// uses li not span
$("#editor").css("width", window.current_node.css("width"));
}
function update_node_from_editor(){
set_node_text(window.current_node, $("#editor")[0].value);
set_editor_width_from_node(window.current_node);
};
var rootNode = {name: "Things Left to do...", nodes:[
{name: 'Look',nodes:[
{name: 'Colour the scopes',nodes:[]},
]},
{name: 'Feel',nodes:[
{name: 'Expand/Collapse',nodes:[]},
{name: 'Split line with "enter"',nodes:[]},
]},
{name: 'Function',nodes:[
{name: 'Save',nodes:[]},
{name: 'Load',nodes:[]},
{name: 'Undo',nodes:[]},
]},
{name: 'Redo',nodes:[]},
{name: 'Auto-Save',nodes:[]},
]};
$("#pageTemplate").tmpl(rootNode).appendTo($("body"));
$(".node > span").live("click", on_span_clicked);
edit_node($(".node").first());
setInterval("update_node_from_editor()",100);
</script>
</html>