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Re-register UIFragment event handlers on node replacement

This commit is contained in:
Tony Garnock-Jones 2016-05-12 15:19:37 -04:00
parent 4eb29832df
commit e0bd8d08c2
1 changed files with 15 additions and 11 deletions
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26
js/src/ui.js
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@ -10,6 +10,7 @@
//
// The design of this module aims to take these lessons into account.
var Immutable = require('immutable');
var Patch = require("./patch.js");
var Trie = require("./trie.js");
var DemandMatcher = require('./demand-matcher.js').DemandMatcher;
@ -142,7 +143,8 @@ function UIFragment(fragmentId) {
this.currentSelector = null;
this.currentHtml = null;
this.eventClosures = {};
this.currentEventRegistrations = Immutable.Map();
// ^ Map from (Map of selector/eventType) to closure.
}
UIFragment.prototype.boot = function () {
@ -220,6 +222,10 @@ UIFragment.prototype.updateContent = function (newSelector, newHtml) {
self.currentAnchorNodes = newAnchors;
self.currentSelector = newSelector;
self.currentHtml = newHtml;
self.currentEventRegistrations.forEach(function (_handlerClosure, key) {
self.updateEventListeners(key.toObject(), true); // (re)install event listeners
});
};
UIFragment.prototype.handleEvent = function (e) {
@ -240,21 +246,19 @@ UIFragment.prototype.handleEvent = function (e) {
}
};
UIFragment.prototype.eventClosureKey = function (c) {
return c.selector + ' :: ' + c.eventType;
};
UIFragment.prototype.getEventClosure = function (c) {
var self = this;
var key = self.eventClosureKey(c);
if (!(key in self.eventClosures)) {
self.eventClosures[key] = Dataspace.wrap(function (e) { return self.handleDomEvent(c, e); });
var key = Immutable.Map(c);
if (!self.currentEventRegistrations.has(key)) {
var handlerClosure = Dataspace.wrap(function (e) { return self.handleDomEvent(c, e); });
self.currentEventRegistrations = self.currentEventRegistrations.set(key, handlerClosure);
}
return self.eventClosures[key];
return self.currentEventRegistrations.get(key);
};
UIFragment.prototype.clearEventClosure = function (c) {
delete this.eventClosures[this.eventClosureKey(c)];
var key = Immutable.Map(c);
this.currentEventRegistrations = this.currentEventRegistrations.remove(key);
};
UIFragment.prototype.updateEventListeners = function (c, install) {
@ -281,7 +285,7 @@ UIFragment.prototype.updateEventListeners = function (c, install) {
});
if (!install) {
self.clearEventClosure(c);
this.clearEventClosure(c);
}
};