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Editor Settings for Contributors

How to organize your development environment for Vaadin documentation contributions.

Setting up your development environment as do Vaadin employees makes it easier to review and accept code contributions.

General Formatting Rules

  • Spaces instead of tabs

  • UTF-8 encoding

  • Unix-style line endings \n

Code Conventions

  1. Open Window › Preferences (Windows) or Eclipse › Preferences (Mac)

  2. On the Java › Code Style › Formatter page, import your local copy of VaadinJavaConventions.xml

  3. On the Java › Code Style › Organize Imports page, import your local copy of flow.importorder

  4. On the Editor › Save Actions tab, make sure that in case Format source code is active, the Format edited lines option is selected. Never use the Format all lines option, as that may introduce loads of unnecessary code changes, making code reviews a nightmare.

  5. Go to General › Workspace

    1. Set Text file encoding to UTF-8

    2. Set New text file line delimiter to Unix

  6. Go to XML › XML Files › Editor and ensure the settings are configured as follows:

    • Line width: 80

    • Format comments: true

    • Join lines: true

    • Insert whitespace before closing empty end-tags: true

    • Indent using spaces: true

    • Indentation size: 4

All source code files need to include a copyright notice at the beginning of the file.

  1. Open Window › Preferences (Windows) or Eclipse › Preferences (Mac)

  2. On the Java › Code Style › Code Templates page, edit the Comments › Files template to add the copyright text:

Copyright 2000-${currentDate:date('yyyy')} Vaadin Ltd.

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 https://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed 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.

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