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							238 lines
						
					
					
						
							5.0 KiB
						
					
					
				
			
		
		
	
	
							238 lines
						
					
					
						
							5.0 KiB
						
					
					
				| function noop() {}
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| 
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| function assign(target) {
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| 	var k,
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| 		source,
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| 		i = 1,
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| 		len = arguments.length;
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| 	for (; i < len; i++) {
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| 		source = arguments[i];
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| 		for (k in source) target[k] = source[k];
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| 	}
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| 
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| 	return target;
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| }
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| 
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| function insertNode(node, target, anchor) {
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| 	target.insertBefore(node, anchor);
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| }
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| 
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| function detachNode(node) {
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| 	node.parentNode.removeChild(node);
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| }
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| 
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| function createElement(name) {
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| 	return document.createElement(name);
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| }
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| 
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| function createText(data) {
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| 	return document.createTextNode(data);
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| }
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| 
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| function destroy(detach) {
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| 	this.destroy = noop;
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| 	this.fire('destroy');
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| 	this.set = this.get = noop;
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| 
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| 	if (detach !== false) this._fragment.unmount();
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| 	this._fragment.destroy();
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| 	this._fragment = this._state = null;
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| }
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| 
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| function differs(a, b) {
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| 	return a !== b || ((a && typeof a === 'object') || typeof a === 'function');
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| }
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| 
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| function dispatchObservers(component, group, changed, newState, oldState) {
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| 	for (var key in group) {
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| 		if (!changed[key]) continue;
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| 
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| 		var newValue = newState[key];
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| 		var oldValue = oldState[key];
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| 
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| 		var callbacks = group[key];
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| 		if (!callbacks) continue;
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| 
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| 		for (var i = 0; i < callbacks.length; i += 1) {
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| 			var callback = callbacks[i];
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| 			if (callback.__calling) continue;
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| 
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| 			callback.__calling = true;
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| 			callback.call(component, newValue, oldValue);
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| 			callback.__calling = false;
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| 		}
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| 	}
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| }
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| 
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| function get(key) {
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| 	return key ? this._state[key] : this._state;
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| }
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| 
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| function fire(eventName, data) {
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| 	var handlers =
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| 		eventName in this._handlers && this._handlers[eventName].slice();
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| 	if (!handlers) return;
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| 
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| 	for (var i = 0; i < handlers.length; i += 1) {
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| 		handlers[i].call(this, data);
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| 	}
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| }
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| 
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| function observe(key, callback, options) {
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| 	var group = options && options.defer
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| 		? this._observers.post
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| 		: this._observers.pre;
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| 
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| 	(group[key] || (group[key] = [])).push(callback);
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| 
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| 	if (!options || options.init !== false) {
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| 		callback.__calling = true;
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| 		callback.call(this, this._state[key]);
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| 		callback.__calling = false;
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| 	}
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| 
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| 	return {
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| 		cancel: function() {
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| 			var index = group[key].indexOf(callback);
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| 			if (~index) group[key].splice(index, 1);
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| 		}
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| 	};
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| }
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| 
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| function on(eventName, handler) {
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| 	if (eventName === 'teardown') return this.on('destroy', handler);
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| 
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| 	var handlers = this._handlers[eventName] || (this._handlers[eventName] = []);
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| 	handlers.push(handler);
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| 
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| 	return {
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| 		cancel: function() {
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| 			var index = handlers.indexOf(handler);
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| 			if (~index) handlers.splice(index, 1);
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| 		}
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| 	};
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| }
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| 
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| function set(newState) {
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| 	this._set(assign({}, newState));
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| 	if (this._root._lock) return;
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| 	this._root._lock = true;
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| 	callAll(this._root._beforecreate);
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| 	callAll(this._root._oncreate);
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| 	callAll(this._root._aftercreate);
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| 	this._root._lock = false;
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| }
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| 
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| function _set(newState) {
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| 	var oldState = this._state,
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| 		changed = {},
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| 		dirty = false;
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| 
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| 	for (var key in newState) {
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| 		if (differs(newState[key], oldState[key])) changed[key] = dirty = true;
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| 	}
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| 	if (!dirty) return;
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| 
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| 	this._state = assign({}, oldState, newState);
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| 	this._recompute(changed, this._state, oldState, false);
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| 	if (this._bind) this._bind(changed, this._state);
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| 	dispatchObservers(this, this._observers.pre, changed, this._state, oldState);
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| 	this._fragment.update(changed, this._state);
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| 	dispatchObservers(this, this._observers.post, changed, this._state, oldState);
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| }
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| 
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| function callAll(fns) {
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| 	while (fns && fns.length) fns.pop()();
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| }
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| 
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| function _mount(target, anchor) {
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| 	this._fragment.mount(target, anchor);
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| }
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| 
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| function _unmount() {
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| 	this._fragment.unmount();
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| }
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| 
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| var proto = {
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| 	destroy: destroy,
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| 	get: get,
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| 	fire: fire,
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| 	observe: observe,
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| 	on: on,
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| 	set: set,
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| 	teardown: destroy,
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| 	_recompute: noop,
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| 	_set: _set,
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| 	_mount: _mount,
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| 	_unmount: _unmount
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| };
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| 
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| function create_main_fragment(state, component) {
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| 	var div, text, div_1, div_1_style_value;
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| 
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| 	return {
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| 		create: function() {
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| 			div = createElement("div");
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| 			text = createText("\n");
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| 			div_1 = createElement("div");
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| 			this.hydrate();
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| 		},
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| 
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| 		hydrate: function(nodes) {
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| 			div.style.cssText = state.style;
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| 			div_1.style.cssText = div_1_style_value = "" + state.key + ": " + state.value;
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| 		},
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| 
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| 		mount: function(target, anchor) {
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| 			insertNode(div, target, anchor);
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| 			insertNode(text, target, anchor);
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| 			insertNode(div_1, target, anchor);
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| 		},
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| 
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| 		update: function(changed, state) {
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| 			if ( changed.style ) {
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| 				div.style.cssText = state.style;
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| 			}
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| 
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| 			if ( (changed.key || changed.value) && div_1_style_value !== (div_1_style_value = "" + state.key + ": " + state.value) ) {
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| 				div_1.style.cssText = div_1_style_value;
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| 			}
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| 		},
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| 
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| 		unmount: function() {
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| 			detachNode(div);
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| 			detachNode(text);
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| 			detachNode(div_1);
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| 		},
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| 
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| 		destroy: noop
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| 	};
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| }
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| 
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| function SvelteComponent(options) {
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| 	this.options = options;
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| 	this._state = options.data || {};
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| 
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| 	this._observers = {
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| 		pre: Object.create(null),
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| 		post: Object.create(null)
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| 	};
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| 
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| 	this._handlers = Object.create(null);
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| 
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| 	this._root = options._root || this;
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| 	this._yield = options._yield;
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| 	this._bind = options._bind;
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| 
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| 	this._fragment = create_main_fragment(this._state, this);
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| 
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| 	if (options.target) {
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| 		this._fragment.create();
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| 		this._fragment.mount(options.target, options.anchor || null);
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| 	}
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| }
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| 
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| assign(SvelteComponent.prototype, proto );
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| 
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| export default SvelteComponent;
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