jquery.entwine.eventcapture.js
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(function($) {
$.entwine.Namespace.addMethods({
bind_capture: function(selector, event, name, capture) {
var store = this.captures || (this.captures = {});
var rulelists = store[event] || (store[event] = {});
var rulelist = rulelists[name] || (rulelists[name] = $.entwine.RuleList());
rule = rulelist.addRule(selector, event);
rule.handler = name;
this.bind_proxy(selector, name, capture);
}
});
var bindings = $.entwine.capture_bindings = {};
var event_proxy = function(event) {
return function(e) {
var namespace, capturelists, forevent, capturelist, rule, handler, sel;
for (var k in $.entwine.namespaces) {
namespace = $.entwine.namespaces[k];
capturelists = namespace.captures;
if (capturelists && (forevent = capturelists[event])) {
for (var k in forevent) {
var capturelist = forevent[k];
var triggered = namespace.$([]);
// Stepping through each selector from most to least specific
var j = capturelist.length;
while (j--) {
rule = capturelist[j];
handler = rule.handler;
sel = rule.selector.selector;
var matching = namespace.$(sel).not(triggered);
matching[handler].apply(matching, arguments);
triggered = triggered.add(matching);
}
}
}
}
}
};
var selector_proxy = function(selector, handler, includechildren) {
var matcher = $.selector(selector);
return function(e){
if (matcher.matches(e.target)) return handler.apply(this, arguments);
}
};
var document_proxy = function(selector, handler, includechildren) {
return function(e){
if (e.target === document) return handler.apply(this, arguments);
}
};
var window_proxy = function(selector, handler, includechildren) {
return function(e){
if (e.target === window) return handler.apply(this, arguments);
}
};
var property_proxy = function(property, handler, includechildren) {
var matcher;
return function(e){
var match = this['get'+property]();
if (typeof(match) == 'string') {
var matcher = (matcher && match == matcher.selector) ? matcher : $.selector(match);
if (matcher.matches(e.target)) return handler.apply(this, arguments);
}
else {
if ($.inArray(e.target, match) !== -1) return handler.apply(this, arguments);
}
}
};
$.entwine.Namespace.addHandler({
order: 10,
bind: function(selector, k, v) {
var match;
if ($.isPlainObject(v) && (match = k.match(/^from\s*(.*)/))) {
var from = match[1];
var proxyGen;
if (from.match(/[^\w]/)) proxyGen = selector_proxy;
else if (from == 'Window' || from == 'window') proxyGen = window_proxy;
else if (from == 'Document' || from == 'document') proxyGen = document_proxy;
else proxyGen = property_proxy;
for (var onevent in v) {
var handler = v[onevent];
match = onevent.match(/^on(.*)/);
var event = match[1];
this.bind_capture(selector, event, k + '_' + event, proxyGen(from, handler));
if (!bindings[event]) {
var namespaced = event.replace(/(\s+|$)/g, '.entwine$1');
bindings[event] = event_proxy(event);
$(proxyGen == window_proxy ? window : document).bind(namespaced, bindings[event]);
}
}
return true;
}
}
});
})(jQuery);