forked from cory/tildefriends
Work in progress blog app. Added cork/uncork to the terminal so that I can suppress blinking. I think I accidentally fixed some output issues in here, too.
git-svn-id: https://www.unprompted.com/svn/projects/tildefriends/trunk@3174 ed5197a5-7fde-0310-b194-c3ffbd925b24
This commit is contained in:
189
packages/cory/blog/blog.js
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189
packages/cory/blog/blog.js
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@@ -0,0 +1,189 @@
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"use strict";
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class Log {
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constructor(name, capacity) {
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this._name = name;
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this._capacity = capacity || -1;
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}
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append(item) {
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var log = this;
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return database.get(log._name + "_head").catch(function(error) {
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return 0;
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}).then(function(head) {
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var newHead = (parseInt(head) || 0) + 1;
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var actions = [
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database.set(log._name + "_" + newHead.toString(), JSON.stringify(item)),
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database.set(log._name + "_head", newHead),
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];
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if (log._capacity >= 0) {
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actions.push(log.truncate(newHead - log._capacity));
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}
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return Promise.all(actions);
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});
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}
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truncate(end) {
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var log = this;
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return database.get(log._name + "_" + end.toString()).then(function(item) {
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if (item) {
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return database.remove(log._name + "_" + end.toString()).then(function() {
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return log.truncate(end - 1);
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});
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}
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});
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}
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get(count, start, result) {
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var log = this;
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if (!count) {
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count = 10;
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}
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if (!start) {
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return database.get(log._name + "_head").then(function(head) {
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if (head !== undefined) {
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return log.get(count, parseInt(head));
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} else {
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return [];
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}
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});
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}
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var promises = [];
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promises.length = count;
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for (var i = 0; i < count; i++) {
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promises[i] = database.get(log._name + "_" + (start - i).toString());
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}
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return Promise.all(promises);
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}
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};
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/*
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if (imports.terminal) {
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core.register("onSubmit", function(message) {
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core.broadcast(message);
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});
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core.register("onMessage", function(from, message) {
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terminal.print(JSON.stringify(message));
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});
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terminal.print("Hello, world!");
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var log = new Log("events");
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function dump() {
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return log.get().then(function(data) {
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terminal.print(JSON.stringify(data));
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}).catch(function(error) {
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terminal.print(error);
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});
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}
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core.register("onInput", function(input) {
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log.append({message: input}).then(dump);
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});
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}
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core.register("onAtom", function(query) {
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return "hello, world!";
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});
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*/
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terminal.setEcho(false);
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var gBlog = new Log("blog");
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core.register("onInput", function(input) {
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if (input == "new post") {
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startNewPost();
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} else if (input == "submit") {
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submitNewPost().then(renderBlog);
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}
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});
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function renderBlog() {
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terminal.split([
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{name: "terminal"},
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]);
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terminal.select("terminal");
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terminal.print("Blog Test");
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if (core.user.credentials.permissions.authenticated) {
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terminal.print({command: "new post"});
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}
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gBlog.get(10).then(function(entries) {
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for (var i = 0; i < entries.length; i++) {
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var entry = JSON.parse(entries[i]);
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terminal.print({style: "font-weight: bold", value: entry.title});
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terminal.print(entry.entry);
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terminal.print();
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}
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});
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}
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var gNewPost;
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function submitNewPost() {
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return gBlog.append(gNewPost);
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}
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function startNewPost() {
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core.register("onWindowMessage", function(message) {
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gNewPost = message.message;
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terminal.cork();
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terminal.select("right");
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terminal.clear();
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terminal.print({style: "font-width: x-large", value: message.message.title});
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terminal.print(message.message.entry);
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terminal.print({command: "submit"});
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terminal.uncork();
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});
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terminal.split([
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{
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type: "horizontal",
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children: [
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{name: "left", grow: "0", shrink: "0", basis: "50%"},
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{name: "right", grow: "0", shrink: "0", basis: "50%"},
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],
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}
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]);
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terminal.select("left");
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terminal.print({iframe: `<html>
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<head>
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<style>
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html, body, textarea {
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position: relative;
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width: 100%;
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height: 100%;
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margin: 0;
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padding: 0;
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overflow: hidden;
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}
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textarea {
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overflow: auto;
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resize: none;
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}
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</style>
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<script>
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function textChanged() {
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parent.postMessage({
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title: document.getElementById("title").value,
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entry: document.getElementById("entry").value,
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}, "*");
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}
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</script>
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</head>
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<body>
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<input type="text" id="title" style="width: 100%" oninput="textChanged()">
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<textarea id="entry" oninput="textChanged()"></textarea>
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</body>
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</html>`, style: "overflow: hidden; position: relative; left: 0; top: 0; right: 0; bottom: 0"});
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terminal.select("right");
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}
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renderBlog();
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