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node-red/red/api/theme.js

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/**
* Copyright JS Foundation and other contributors, http://js.foundation
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*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
**/
var express = require("express");
var util = require("util");
var path = require("path");
var fs = require("fs");
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var clone = require("clone");
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var defaultContext = {
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page: {
title: "Node-RED",
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favicon: "favicon.ico",
tabicon: "red/images/node-red-icon-black.svg"
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},
header: {
title: "Node-RED",
image: "red/images/node-red.png"
},
asset: {
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red: (process.env.NODE_ENV == "development")? "red/red.js":"red/red.min.js",
main: (process.env.NODE_ENV == "development")? "red/main.js":"red/main.min.js",
}
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};
var theme = null;
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var themeContext = clone(defaultContext);
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var themeSettings = null;
var runtime = null;
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var themeApp;
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function serveFile(app,baseUrl,file) {
try {
var stats = fs.statSync(file);
var url = baseUrl+path.basename(file);
//console.log(url,"->",file);
app.get(url,function(req, res) {
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res.sendFile(file);
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});
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return "theme"+url;
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} catch(err) {
//TODO: log filenotfound
return null;
}
}
function serveFilesFromTheme(themeValue, themeApp, directory) {
var result = [];
if (themeValue) {
var array = themeValue;
if (!util.isArray(array)) {
array = [array];
}
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for (var i=0;i<array.length;i++) {
var url = serveFile(themeApp,directory,array[i]);
if (url) {
result.push(url);
}
}
}
return result
}
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module.exports = {
init: function(runtime) {
var settings = runtime.settings;
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themeContext = clone(defaultContext);
if (runtime.version) {
themeContext.version = runtime.version();
}
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themeSettings = null;
theme = settings.editorTheme || {};
},
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app: function() {
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var i;
var url;
themeSettings = {};
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themeApp = express();
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if (theme.page) {
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themeContext.page.css = serveFilesFromTheme(
theme.page.css,
themeApp,
"/css/")
themeContext.page.scripts = serveFilesFromTheme(
theme.page.scripts,
themeApp,
"/scripts/")
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if (theme.page.favicon) {
url = serveFile(themeApp,"/favicon/",theme.page.favicon)
if (url) {
themeContext.page.favicon = url;
}
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}
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if (theme.page.tabicon) {
url = serveFile(themeApp,"/tabicon/",theme.page.tabicon)
if (url) {
themeContext.page.tabicon = url;
}
}
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themeContext.page.title = theme.page.title || themeContext.page.title;
}
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if (theme.header) {
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themeContext.header.title = theme.header.title || themeContext.header.title;
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if (theme.header.hasOwnProperty("url")) {
themeContext.header.url = theme.header.url;
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}
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if (theme.header.hasOwnProperty("image")) {
if (theme.header.image) {
url = serveFile(themeApp,"/header/",theme.header.image);
if (url) {
themeContext.header.image = url;
}
} else {
themeContext.header.image = null;
}
}
}
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if (theme.deployButton) {
if (theme.deployButton.type == "simple") {
themeSettings.deployButton = {
type: "simple"
}
if (theme.deployButton.label) {
themeSettings.deployButton.label = theme.deployButton.label;
}
if (theme.deployButton.icon) {
url = serveFile(themeApp,"/deploy/",theme.deployButton.icon);
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if (url) {
themeSettings.deployButton.icon = url;
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}
}
}
}
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if (theme.hasOwnProperty("userMenu")) {
themeSettings.userMenu = theme.userMenu;
}
if (theme.login) {
if (theme.login.image) {
url = serveFile(themeApp,"/login/",theme.login.image);
if (url) {
themeContext.login = {
image: url
}
}
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}
}
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if (theme.hasOwnProperty("menu")) {
themeSettings.menu = theme.menu;
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}
if (theme.hasOwnProperty("palette")) {
themeSettings.palette = theme.palette;
}
return themeApp;
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},
context: function() {
return themeContext;
},
settings: function() {
return themeSettings;
},
serveFile: function(baseUrl,file) {
return serveFile(themeApp,baseUrl,file);
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}
}