mirror of https://github.com/sveltejs/svelte
Rich Harris
7 years ago
commit
66c382acae
@ -0,0 +1,237 @@
|
||||
function noop() {}
|
||||
|
||||
function assign(target) {
|
||||
var k,
|
||||
source,
|
||||
i = 1,
|
||||
len = arguments.length;
|
||||
for (; i < len; i++) {
|
||||
source = arguments[i];
|
||||
for (k in source) target[k] = source[k];
|
||||
}
|
||||
|
||||
return target;
|
||||
}
|
||||
|
||||
function insertNode(node, target, anchor) {
|
||||
target.insertBefore(node, anchor);
|
||||
}
|
||||
|
||||
function detachNode(node) {
|
||||
node.parentNode.removeChild(node);
|
||||
}
|
||||
|
||||
function createElement(name) {
|
||||
return document.createElement(name);
|
||||
}
|
||||
|
||||
function addListener(node, event, handler) {
|
||||
node.addEventListener(event, handler, false);
|
||||
}
|
||||
|
||||
function removeListener(node, event, handler) {
|
||||
node.removeEventListener(event, handler, false);
|
||||
}
|
||||
|
||||
function destroy(detach) {
|
||||
this.destroy = noop;
|
||||
this.fire('destroy');
|
||||
this.set = this.get = noop;
|
||||
|
||||
if (detach !== false) this._fragment.unmount();
|
||||
this._fragment.destroy();
|
||||
this._fragment = this._state = null;
|
||||
}
|
||||
|
||||
function differs(a, b) {
|
||||
return a !== b || ((a && typeof a === 'object') || typeof a === 'function');
|
||||
}
|
||||
|
||||
function dispatchObservers(component, group, changed, newState, oldState) {
|
||||
for (var key in group) {
|
||||
if (!changed[key]) continue;
|
||||
|
||||
var newValue = newState[key];
|
||||
var oldValue = oldState[key];
|
||||
|
||||
var callbacks = group[key];
|
||||
if (!callbacks) continue;
|
||||
|
||||
for (var i = 0; i < callbacks.length; i += 1) {
|
||||
var callback = callbacks[i];
|
||||
if (callback.__calling) continue;
|
||||
|
||||
callback.__calling = true;
|
||||
callback.call(component, newValue, oldValue);
|
||||
callback.__calling = false;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
function get(key) {
|
||||
return key ? this._state[key] : this._state;
|
||||
}
|
||||
|
||||
function fire(eventName, data) {
|
||||
var handlers =
|
||||
eventName in this._handlers && this._handlers[eventName].slice();
|
||||
if (!handlers) return;
|
||||
|
||||
for (var i = 0; i < handlers.length; i += 1) {
|
||||
handlers[i].call(this, data);
|
||||
}
|
||||
}
|
||||
|
||||
function observe(key, callback, options) {
|
||||
var group = options && options.defer
|
||||
? this._observers.post
|
||||
: this._observers.pre;
|
||||
|
||||
(group[key] || (group[key] = [])).push(callback);
|
||||
|
||||
if (!options || options.init !== false) {
|
||||
callback.__calling = true;
|
||||
callback.call(this, this._state[key]);
|
||||
callback.__calling = false;
|
||||
}
|
||||
|
||||
return {
|
||||
cancel: function() {
|
||||
var index = group[key].indexOf(callback);
|
||||
if (~index) group[key].splice(index, 1);
|
||||
}
|
||||
};
|
||||
}
|
||||
|
||||
function on(eventName, handler) {
|
||||
if (eventName === 'teardown') return this.on('destroy', handler);
|
||||
|
||||
var handlers = this._handlers[eventName] || (this._handlers[eventName] = []);
|
||||
handlers.push(handler);
|
||||
|
||||
return {
|
||||
cancel: function() {
|
||||
var index = handlers.indexOf(handler);
|
||||
if (~index) handlers.splice(index, 1);
|
||||
}
|
||||
};
|
||||
}
|
||||
|
||||
function set(newState) {
|
||||
this._set(assign({}, newState));
|
||||
if (this._root._lock) return;
|
||||
this._root._lock = true;
|
||||
callAll(this._root._beforecreate);
|
||||
callAll(this._root._oncreate);
|
||||
callAll(this._root._aftercreate);
|
||||
this._root._lock = false;
|
||||
}
|
||||
|
||||
function _set(newState) {
|
||||
var oldState = this._state,
|
||||
changed = {},
|
||||
dirty = false;
|
||||
|
||||
for (var key in newState) {
|
||||
if (differs(newState[key], oldState[key])) changed[key] = dirty = true;
|
||||
}
|
||||
if (!dirty) return;
|
||||
|
||||
this._state = assign({}, oldState, newState);
|
||||
this._recompute(changed, this._state, oldState, false);
|
||||
if (this._bind) this._bind(changed, this._state);
|
||||
dispatchObservers(this, this._observers.pre, changed, this._state, oldState);
|
||||
this._fragment.update(changed, this._state);
|
||||
dispatchObservers(this, this._observers.post, changed, this._state, oldState);
|
||||
}
|
||||
|
||||
function callAll(fns) {
|
||||
while (fns && fns.length) fns.pop()();
|
||||
}
|
||||
|
||||
function _mount(target, anchor) {
|
||||
this._fragment.mount(target, anchor);
|
||||
}
|
||||
|
||||
function _unmount() {
|
||||
this._fragment.unmount();
|
||||
}
|
||||
|
||||
var proto = {
|
||||
destroy: destroy,
|
||||
get: get,
|
||||
fire: fire,
|
||||
observe: observe,
|
||||
on: on,
|
||||
set: set,
|
||||
teardown: destroy,
|
||||
_recompute: noop,
|
||||
_set: _set,
|
||||
_mount: _mount,
|
||||
_unmount: _unmount
|
||||
};
|
||||
|
||||
function create_main_fragment(state, component) {
|
||||
var input;
|
||||
|
||||
function input_change_handler() {
|
||||
component.set({ foo: input.checked });
|
||||
}
|
||||
|
||||
return {
|
||||
create: function() {
|
||||
input = createElement( 'input' );
|
||||
this.hydrate();
|
||||
},
|
||||
|
||||
hydrate: function(nodes) {
|
||||
input.type = "checkbox";
|
||||
addListener(input, "change", input_change_handler);
|
||||
},
|
||||
|
||||
mount: function(target, anchor) {
|
||||
insertNode( input, target, anchor );
|
||||
|
||||
input.checked = state.foo;
|
||||
},
|
||||
|
||||
update: function(changed, state) {
|
||||
input.checked = state.foo;
|
||||
},
|
||||
|
||||
unmount: function() {
|
||||
detachNode( input );
|
||||
},
|
||||
|
||||
destroy: function() {
|
||||
removeListener(input, "change", input_change_handler);
|
||||
}
|
||||
};
|
||||
}
|
||||
|
||||
function SvelteComponent(options) {
|
||||
this.options = options;
|
||||
this._state = options.data || {};
|
||||
|
||||
this._observers = {
|
||||
pre: Object.create(null),
|
||||
post: Object.create(null)
|
||||
};
|
||||
|
||||
this._handlers = Object.create(null);
|
||||
|
||||
this._root = options._root || this;
|
||||
this._yield = options._yield;
|
||||
this._bind = options._bind;
|
||||
|
||||
this._fragment = create_main_fragment(this._state, this);
|
||||
|
||||
if (options.target) {
|
||||
this._fragment.create();
|
||||
this._fragment.mount(options.target, options.anchor || null);
|
||||
}
|
||||
}
|
||||
|
||||
assign(SvelteComponent.prototype, proto );
|
||||
|
||||
export default SvelteComponent;
|
||||
@ -0,0 +1,66 @@
|
||||
import { addListener, assign, createElement, detachNode, insertNode, proto, removeListener } from "svelte/shared.js";
|
||||
|
||||
function create_main_fragment(state, component) {
|
||||
var input;
|
||||
|
||||
function input_change_handler() {
|
||||
component.set({ foo: input.checked });
|
||||
}
|
||||
|
||||
return {
|
||||
create: function() {
|
||||
input = createElement( 'input' );
|
||||
this.hydrate();
|
||||
},
|
||||
|
||||
hydrate: function(nodes) {
|
||||
input.type = "checkbox";
|
||||
addListener(input, "change", input_change_handler);
|
||||
},
|
||||
|
||||
mount: function(target, anchor) {
|
||||
insertNode( input, target, anchor );
|
||||
|
||||
input.checked = state.foo;
|
||||
},
|
||||
|
||||
update: function(changed, state) {
|
||||
input.checked = state.foo;
|
||||
},
|
||||
|
||||
unmount: function() {
|
||||
detachNode( input );
|
||||
},
|
||||
|
||||
destroy: function() {
|
||||
removeListener(input, "change", input_change_handler);
|
||||
}
|
||||
};
|
||||
}
|
||||
|
||||
function SvelteComponent(options) {
|
||||
this.options = options;
|
||||
this._state = options.data || {};
|
||||
|
||||
this._observers = {
|
||||
pre: Object.create(null),
|
||||
post: Object.create(null)
|
||||
};
|
||||
|
||||
this._handlers = Object.create(null);
|
||||
|
||||
this._root = options._root || this;
|
||||
this._yield = options._yield;
|
||||
this._bind = options._bind;
|
||||
|
||||
this._fragment = create_main_fragment(this._state, this);
|
||||
|
||||
if (options.target) {
|
||||
this._fragment.create();
|
||||
this._fragment.mount(options.target, options.anchor || null);
|
||||
}
|
||||
}
|
||||
|
||||
assign(SvelteComponent.prototype, proto );
|
||||
|
||||
export default SvelteComponent;
|
||||
@ -0,0 +1 @@
|
||||
<input type='checkbox' bind:checked='foo'>
|
||||
Loading…
Reference in new issue