125 lines
4.2 KiB
JavaScript
125 lines
4.2 KiB
JavaScript
"use strict";
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var Model = require("./model");
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var Page = require("./page");
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var ModelString = require("./string");
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var Vocabulary = require("../wType/vocabulary");
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var Address = require("../wType/address");
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var String = require("../wType/string");
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var Event = require("../wType/event");
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var AbstractMap = require("../wContainer/abstractmap");
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var AddressMap = AbstractMap.template(Address, String);
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var PageStorage = Model.inherit({
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"className": "PageStorage",
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"constructor": function(addr, rootPage, pr) {
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Model.fn.constructor.call(this, addr);
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this._urls = {};
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this._specialPages = {};
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this._rMap = new AddressMap(true);
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this._root = rootPage;
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this._pr = pr;
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this._initRootPage();
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this._initNotFoundPage();
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this.addHandler("getPageAddress");
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this.addHandler("getPageName");
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},
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"destructor": function() {
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this._rMap.destructor();
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Model.fn.destructor.call(this);
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},
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"getPageByUrl": function(url) {
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var addr = url.split("/");
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var page = this._root;
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for (var i = 0; i < addr.length; ++i) {
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if (addr[i] !== "") {
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page = page.getChildPage(addr[i]);
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if (page === undefined) {
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return this._specialPages.notFound;
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}
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}
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}
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return page;
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},
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"hasPage": function(name) {
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return this.getPageByUrl(name) !== this._specialPages.notFound
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},
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"_h_getPageAddress": function(ev) {
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var data = ev.getData();
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var page = this.getPageByUrl(data.at("url").valueOf());
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var vc = new Vocabulary();
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if (page) {
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vc.insert("address", page.getAddress());
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} else {
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vc.insert("address", this._specialPages.notFound.getAddress());
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}
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this.response(vc, "pageAddress", ev);
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},
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"_h_getPageName": function(ev) {
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var data = ev.getData();
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var address = data.at("address");
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var evp = new Event(address["+"](new Address(["ping"])));
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this._dp.pass(evp);
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evp.destructor();
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var itr = this._rMap.find(address);
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var vc = new Vocabulary();
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if (itr["=="](this._rMap.end())) {
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vc.insert("name", new String("notFound"));
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} else {
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vc.insert("name", itr["*"]().second.clone());
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}
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this.response(vc, "pageName", ev);
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},
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"_initNotFoundPage": function() {
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var nf = new Page(this._address["+"](new Address(["special", "notFound"])), "Not found");
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this._specialPages["notFound"] = nf;
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this.addModel(nf);
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var msg = new ModelString(nf._address["+"](new Address(["errorMessage"])), "Error: page not found");
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nf.addItem(msg, 0, 0, 1, 1);
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},
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"_initRootPage": function() {
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this.addModel(this._root);
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this._rMap.insert(this._root.getAddress(), new String("/"));
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this._root.on("newPage", this._onNewPage, this);
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this._root.on("removePage", this._onRemovePage, this);
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},
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"_onNewPage": function(page) {
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var addr = page.urlAddress.join("/").slice(this._root.name.length);
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this.trigger("serviceMessage", "Adding new page: " + addr);
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this.trigger("serviceMessage", "Page address: " + page.getAddress().toString());
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if (this._urls[addr]) {
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throw new Error("An attempt to add page with an existing url");
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}
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this._urls[addr] = page;
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this._rMap.insert(page.getAddress(), new String(addr));
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page.setParentReporter(this._pr);
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},
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"_onRemovePage": function(page) {
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var addr = page.urlAddress.join("/").slice(this._root.name.length);
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this.trigger("serviceMessage", "Removing page: " + addr);
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this.trigger("serviceMessage", "Page address: " + page.getAddress().toString());
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if (!this._urls[addr]) {
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throw new Error("An attempt to remove a non existing page");
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}
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delete this._urls[addr];
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var itr = this._rMap.find(page.getAddress());
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this._rMap.erase(itr);
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page.unsetParentReporter();
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}
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});
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module.exports = PageStorage;
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