This project provides the UI for the C2PA docs site, which is based on the AsciiDoctor documentation site. It provides both the visual theme and user interactions for the docs site. The UI bundle that this project produces is designed to be used with Antora. It bundles the HTML templates (layouts, partials, and helpers), CSS, JavaScript, fonts, and site-wide images. The rest of the material for the docs site comes from the content repositories.
To use this UI with Antora, add the following configuration to the playbook file for your site:
ui:
bundle:
url: https://github.com/c2pa-org/c2pa-docs-ui/releases/download/prod-267/ui-bundle.zipRead on to learn how to develop the UI.
This section offers a basic tutorial to teach you how to set up the UI project, preview it locally, and bundle it for use with Antora. A more comprehensive tutorial can be found in the documentation at {url-antora-docs}.
To preview and bundle the UI, you need the following software on your computer:
First, make sure you have git installed.
$ git --version
If not, download and install the git package for your system.
Next, make sure that you have Node.js installed (which also provides npm).
$ node --version
If this command fails with an error, you don’t have Node.js installed. If the command doesn’t report an LTS version of Node.js (e.g., v10.15.3), it means you don’t have a suitable version of Node.js installed. In this guide, we’ll be installing Node.js 10.
While you can install Node.js from the official packages, we strongly recommend that you use nvm (Node Version Manager) to manage your Node.js installation(s). Follow the nvm installation instructions to set up nvm on your machine.
Once you’ve installed nvm, open a new terminal and install Node.js 10 using the following command:
$ nvm install 10
You can switch to this version of Node.js at any time using the following command:
$ nvm use 10
To make Node.js 10 the default in new terminals, type:
$ nvm alias default 10
Now that you have Node.js installed, you can proceed with installing the Gulp CLI.
You’ll need the Gulp command-line interface (CLI) to run the build.
The Gulp CLI package provides the gulp command which, in turn, executes the version of Gulp declared by the project.
You can install the Gulp CLI globally (which resolves to a location in your user directory if you’re using nvm) using the following command:
$ npm install -g gulp-cli
Verify the Gulp CLI is installed and on your PATH by running:
$ gulp --version
If you prefer to install global packages using Yarn, run this command instead:
$ yarn global add gulp-cli
Alternately, you can use the gulp command that is installed by the project’s dependencies.
$ $(npm bin)/gulp --version
Now that you have the prerequisites installed, you can fetch and build the UI project.
Clone the UI project using git:
$ git clone https://github.com/c2pa-org/c2pa-docs-ui && cd "`basename $_`"
The example above clones the UI project and then switches to the project folder on your filesystem. Stay in this project folder when executing all subsequent commands.
Use npm to install the project’s dependencies inside the project. In your terminal, execute the following command:
$ npm install
This command installs the dependencies listed in package.json into the node_modules/ folder inside the project. This folder does not get included in the UI bundle and should not be committed to the source control repository.
The UI project is configured to preview offline. The files in the preview-site-src/ folder provide the sample content that allow you to see the UI in action. In this folder, you’ll primarily find pages written in AsciiDoc. These pages provide a representative sample and kitchen sink of content from the real site.
To build the UI and preview it in a local web server, run the preview command:
$ gulp preview
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Tip
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Alternatively, you can use the following command: $ npm start In fact, if you use |
You’ll see a URL listed in the output of this command:
[12:00:00] Starting server... [12:00:00] Server started http://localhost:5252 [12:00:00] Running server
Navigate to this URL to preview the site locally.
While this command is running, any changes you make to the source files will be instantly reflected in the browser.
This works by monitoring the project for changes, running the preview:build task if a change is detected, and sending the updates to the browser.
Press Ctrl+C to stop the preview server and end the continuous build.
If you need to package the UI so you can use it to generate the documentation site locally, run the following command:
$ gulp bundle
If any errors are reported by lint, you’ll need to fix them.
When the command completes successfully, the UI bundle will be available at build/ui-bundle.zip.
You can point Antora at this bundle using the --ui-bundle-url command-line option.
If you have the preview running, and you want to bundle without causing the preview to be clobbered, use:
$ gulp bundle:pack
The UI bundle will again be available at build/ui-bundle.zip.
The build consolidates all the CSS and client-side JavaScript into combined files, site.css and site.js, respectively, in order to reduce the size of the bundle. Source maps correlate these combined files with their original sources.
This “source mapping” is accomplished by generating additional map files that make this association. These map files sit adjacent to the combined files in the build folder. The mapping they provide allows the debugger to present the original source rather than the obfuscated file, an essential tool for debugging.
In preview mode, source maps are enabled automatically, so there’s nothing you have to do to make use of them.
If you need to include source maps in the bundle, you can do so by setting the SOURCEMAPS environment variable to true when you run the bundle command:
$ SOURCEMAPS=true gulp bundle
In this case, the bundle will include the source maps, which can be used for debugging your production site.
Releases are handled by the gulp release task, which is automated by a CI job.
The release process boils down to the following steps:
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Pack the UI bundle.
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Tag the git repository using the next version number in the sequence (e.g., v100 after v99)
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Create a GitHub release from that git tag.
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Attach the UI bundle to that release as an asset in zip format.
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Update the README to reference the URL of the latest bundle and commit that update to the repository.
Fortunately, you don’t have to do any of these steps yourself.
These steps are fully automated by the gulp release task.
In fact, you don’t even have to run this task.
Whenever a commit is pushed to the master branch of the repository, it triggers the CI job on master, which executes the gulp release task using pre-configured credentials.
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A release will only be made if the project validates (i.e., all lint tasks pass).
To validate the project, run gulp lint before pushing your changes to GitHub.
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The CI job is already configured, so there’s nothing you need to do to make automated release work.
All you have to do is commit your changes and push those commits to the master branch of the git repository.
A few seconds later, a new bundle will be available for use with Antora.
Run git pull to retrieve the updated README that includes the new URL.
If you want to commit a change to master without making a release, add the string [skip ci] to the end of the commit message.
The next two sections document how the CI job is set up an configured.
In addition to the Prerequisites covered above, you’ll need a personal access token for the automated GitHub account, c2pa-docbot, so it has permission to make changes to the repository on GitHub. The c2pa-docbot account will need at least write access to the github.com/c2pa-org/c2pa-docs-ui repository, though admin access is recommended.
Start by creating a personal access token for the c2pa-docbot user.
The release task relies on this token to interact with the GitHub API to create the tag, create the release, and attach the UI bundle.
The token must have the public_repo scope.
No other scopes are required (as long as the c2pa-docbot user has write access to the repository).
The c2pa-org/c2pa-docs-ui/actions[CI job] is executed by GitHub Actions and is defined in the file .github/workflows/release.yml.
It boils down to running the gulp release task on the main branch.
The GITHUB_API_TOKEN environment variable is defined in the job configuration.
Once the CI job runs and a new UI bundle is available, you can update the URL of the UI bundle in the Antora playbook file. See Usage for details.
This project is a derivative of the Antora default UI. The software assets in this repository (Gulp build script and tasks, web JavaScript files, Handlebars templates and JavaScript helpers, common CSS, utility icons, etc.) come from the Antora project. As such, use of the software is granted under the terms of the Mozilla Public License Version 2.0 (MPL-2.0). See LICENSE to find the full license text.
Copyright © {https://c2pa.org}[C2PA] 2021-present. This includes any CSS that provides colors or iconography that depict the C2PA brand. All rights reserved (until further notice).