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<title>16. Code Style Setting / IntelliJ Platform SDK DevGuide</title>
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<h1>16. Code Style Setting</h1>
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<a name="define-code-style-settings" class="elem-anchor"></a>
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<h3>16.1. Define code style settings<a href="#define-code-style-settings" class="anchor-link"><span></span></a></h3>
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<pre><code class="code-block__wrapper code-block _highlighted lang_java"><span class="kn">package</span> <span class="n">com</span><span class="o">.</span><span class="na">simpleplugin</span><span class="o">;</span>
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<span class="kn">import</span> <span class="nn">com.intellij.psi.codeStyle.CodeStyleSettings</span><span class="o">;</span>
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<span class="kn">import</span> <span class="nn">com.intellij.psi.codeStyle.CustomCodeStyleSettings</span><span class="o">;</span>
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<span class="kd">public</span> <span class="kd">class</span> <span class="nc">SimpleCodeStyleSettings</span> <span class="kd">extends</span> <span class="n">CustomCodeStyleSettings</span> <span class="o">{</span>
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<span class="kd">public</span> <span class="nf">SimpleCodeStyleSettings</span><span class="o">(</span><span class="n">CodeStyleSettings</span> <span class="n">settings</span><span class="o">)</span> <span class="o">{</span>
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<span class="kd">super</span><span class="o">(</span><span class="s">"SimpleCodeStyleSettings"</span><span class="o">,</span> <span class="n">settings</span><span class="o">);</span>
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<span class="o">}</span>
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<span class="o">}</span>
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</code></pre>
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<a name="define-code-style-settings-provider" class="elem-anchor"></a>
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<h3>16.2. Define code style settings provider<a href="#define-code-style-settings-provider" class="anchor-link"><span></span></a></h3>
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<pre><code class="code-block__wrapper code-block _highlighted lang_java"><span class="kn">package</span> <span class="n">com</span><span class="o">.</span><span class="na">simpleplugin</span><span class="o">;</span>
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<span class="kn">import</span> <span class="nn">com.intellij.application.options.CodeStyleAbstractConfigurable</span><span class="o">;</span>
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<span class="kn">import</span> <span class="nn">com.intellij.application.options.CodeStyleAbstractPanel</span><span class="o">;</span>
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<span class="kn">import</span> <span class="nn">com.intellij.application.options.TabbedLanguageCodeStylePanel</span><span class="o">;</span>
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<span class="kn">import</span> <span class="nn">com.intellij.openapi.options.Configurable</span><span class="o">;</span>
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<span class="kn">import</span> <span class="nn">com.intellij.psi.codeStyle.CodeStyleSettings</span><span class="o">;</span>
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<span class="kn">import</span> <span class="nn">com.intellij.psi.codeStyle.CodeStyleSettingsProvider</span><span class="o">;</span>
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<span class="kn">import</span> <span class="nn">com.intellij.psi.codeStyle.CustomCodeStyleSettings</span><span class="o">;</span>
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<span class="kn">import</span> <span class="nn">org.jetbrains.annotations.NotNull</span><span class="o">;</span>
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<span class="kn">import</span> <span class="nn">org.jetbrains.annotations.Nullable</span><span class="o">;</span>
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<span class="kd">public</span> <span class="kd">class</span> <span class="nc">SimpleCodeStyleSettingsProvider</span> <span class="kd">extends</span> <span class="n">CodeStyleSettingsProvider</span> <span class="o">{</span>
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<span class="nd">@Override</span>
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<span class="kd">public</span> <span class="n">CustomCodeStyleSettings</span> <span class="nf">createCustomSettings</span><span class="o">(</span><span class="n">CodeStyleSettings</span> <span class="n">settings</span><span class="o">)</span> <span class="o">{</span>
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<span class="k">return</span> <span class="k">new</span> <span class="nf">SimpleCodeStyleSettings</span><span class="o">(</span><span class="n">settings</span><span class="o">);</span>
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<span class="o">}</span>
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<span class="nd">@Nullable</span>
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<span class="nd">@Override</span>
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<span class="kd">public</span> <span class="n">String</span> <span class="nf">getConfigurableDisplayName</span><span class="o">()</span> <span class="o">{</span>
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<span class="k">return</span> <span class="s">"Simple"</span><span class="o">;</span>
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<span class="o">}</span>
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<span class="nd">@NotNull</span>
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<span class="nd">@Override</span>
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<span class="kd">public</span> <span class="n">Configurable</span> <span class="nf">createSettingsPage</span><span class="o">(</span><span class="n">CodeStyleSettings</span> <span class="n">settings</span><span class="o">,</span> <span class="n">CodeStyleSettings</span> <span class="n">originalSettings</span><span class="o">)</span> <span class="o">{</span>
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<span class="k">return</span> <span class="k">new</span> <span class="nf">CodeStyleAbstractConfigurable</span><span class="o">(</span><span class="n">settings</span><span class="o">,</span> <span class="n">originalSettings</span><span class="o">,</span> <span class="s">"Simple"</span><span class="o">)</span> <span class="o">{</span>
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<span class="nd">@Override</span>
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<span class="kd">protected</span> <span class="n">CodeStyleAbstractPanel</span> <span class="nf">createPanel</span><span class="o">(</span><span class="n">CodeStyleSettings</span> <span class="n">settings</span><span class="o">)</span> <span class="o">{</span>
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<span class="k">return</span> <span class="k">new</span> <span class="nf">SimpleCodeStyleMainPanel</span><span class="o">(</span><span class="n">getCurrentSettings</span><span class="o">(),</span> <span class="n">settings</span><span class="o">);</span>
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<span class="o">}</span>
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<span class="nd">@Nullable</span>
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<span class="nd">@Override</span>
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<span class="kd">public</span> <span class="n">String</span> <span class="nf">getHelpTopic</span><span class="o">()</span> <span class="o">{</span>
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<span class="k">return</span> <span class="kc">null</span><span class="o">;</span>
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<span class="o">}</span>
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<span class="o">};</span>
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<span class="o">}</span>
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<span class="kd">private</span> <span class="kd">static</span> <span class="kd">class</span> <span class="nc">SimpleCodeStyleMainPanel</span> <span class="kd">extends</span> <span class="n">TabbedLanguageCodeStylePanel</span> <span class="o">{</span>
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<span class="kd">public</span> <span class="nf">SimpleCodeStyleMainPanel</span><span class="o">(</span><span class="n">CodeStyleSettings</span> <span class="n">currentSettings</span><span class="o">,</span> <span class="n">CodeStyleSettings</span> <span class="n">settings</span><span class="o">)</span> <span class="o">{</span>
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<span class="kd">super</span><span class="o">(</span><span class="n">SimpleLanguage</span><span class="o">.</span><span class="na">INSTANCE</span><span class="o">,</span> <span class="n">currentSettings</span><span class="o">,</span> <span class="n">settings</span><span class="o">);</span>
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<span class="o">}</span>
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<span class="o">}</span>
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<span class="o">}</span>
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</code></pre>
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<a name="register-the-code-style-settings-provider" class="elem-anchor"></a>
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<h3>16.3. Register the code style settings provider<a href="#register-the-code-style-settings-provider" class="anchor-link"><span></span></a></h3>
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<pre><code class="code-block__wrapper code-block _highlighted lang_xml"><span class="nt"><codeStyleSettingsProvider</span> <span class="na">implementation=</span><span class="s">"com.simpleplugin.SimpleCodeStyleSettingsProvider"</span><span class="nt">/></span>
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</code></pre>
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<a name="define-language-code-style-settings-provider" class="elem-anchor"></a>
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<h3>16.4. Define language code style settings provider<a href="#define-language-code-style-settings-provider" class="anchor-link"><span></span></a></h3>
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<pre><code class="code-block__wrapper code-block _highlighted lang_java"><span class="kn">package</span> <span class="n">com</span><span class="o">.</span><span class="na">simpleplugin</span><span class="o">;</span>
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<span class="kn">import</span> <span class="nn">com.intellij.lang.Language</span><span class="o">;</span>
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<span class="kn">import</span> <span class="nn">com.intellij.psi.codeStyle.CodeStyleSettingsCustomizable</span><span class="o">;</span>
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<span class="kn">import</span> <span class="nn">com.intellij.psi.codeStyle.LanguageCodeStyleSettingsProvider</span><span class="o">;</span>
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<span class="kn">import</span> <span class="nn">org.jetbrains.annotations.NotNull</span><span class="o">;</span>
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<span class="kd">public</span> <span class="kd">class</span> <span class="nc">SimpleLanguageCodeStyleSettingsProvider</span> <span class="kd">extends</span> <span class="n">LanguageCodeStyleSettingsProvider</span> <span class="o">{</span>
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<span class="nd">@NotNull</span>
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<span class="nd">@Override</span>
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<span class="kd">public</span> <span class="n">Language</span> <span class="nf">getLanguage</span><span class="o">()</span> <span class="o">{</span>
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<span class="k">return</span> <span class="n">SimpleLanguage</span><span class="o">.</span><span class="na">INSTANCE</span><span class="o">;</span>
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<span class="o">}</span>
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<span class="nd">@Override</span>
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<span class="kd">public</span> <span class="kt">void</span> <span class="nf">customizeSettings</span><span class="o">(</span><span class="nd">@NotNull</span> <span class="n">CodeStyleSettingsCustomizable</span> <span class="n">consumer</span><span class="o">,</span> <span class="nd">@NotNull</span> <span class="n">SettingsType</span> <span class="n">settingsType</span><span class="o">)</span> <span class="o">{</span>
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<span class="k">if</span> <span class="o">(</span><span class="n">settingsType</span> <span class="o">==</span> <span class="n">SettingsType</span><span class="o">.</span><span class="na">SPACING_SETTINGS</span><span class="o">)</span> <span class="o">{</span>
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<span class="n">consumer</span><span class="o">.</span><span class="na">showStandardOptions</span><span class="o">(</span><span class="s">"SPACE_AROUND_ASSIGNMENT_OPERATORS"</span><span class="o">);</span>
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<span class="n">consumer</span><span class="o">.</span><span class="na">renameStandardOption</span><span class="o">(</span><span class="s">"SPACE_AROUND_ASSIGNMENT_OPERATORS"</span><span class="o">,</span> <span class="s">"Separator"</span><span class="o">);</span>
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<span class="o">}</span> <span class="k">else</span> <span class="k">if</span> <span class="o">(</span><span class="n">settingsType</span> <span class="o">==</span> <span class="n">SettingsType</span><span class="o">.</span><span class="na">BLANK_LINES_SETTINGS</span><span class="o">)</span> <span class="o">{</span>
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<span class="n">consumer</span><span class="o">.</span><span class="na">showStandardOptions</span><span class="o">(</span><span class="s">"KEEP_BLANK_LINES_IN_CODE"</span><span class="o">);</span>
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<span class="o">}</span>
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<span class="o">}</span>
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<span class="nd">@Override</span>
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<span class="kd">public</span> <span class="n">String</span> <span class="nf">getCodeSample</span><span class="o">(</span><span class="nd">@NotNull</span> <span class="n">SettingsType</span> <span class="n">settingsType</span><span class="o">)</span> <span class="o">{</span>
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<span class="k">return</span> <span class="s">"# You are reading the \".properties\" entry.\n"</span> <span class="o">+</span>
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<span class="s">"! The exclamation mark can also mark text as comments.\n"</span> <span class="o">+</span>
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<span class="s">"website = http://en.wikipedia.org/\n"</span> <span class="o">+</span>
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<span class="s">"\n"</span> <span class="o">+</span>
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<span class="s">"\n"</span> <span class="o">+</span>
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<span class="s">"\n"</span> <span class="o">+</span>
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<span class="s">"language = English\n"</span> <span class="o">+</span>
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<span class="s">"# The backslash below tells the application to continue reading\n"</span> <span class="o">+</span>
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<span class="s">"# the value onto the next line.\n"</span> <span class="o">+</span>
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<span class="s">"message = Welcome to \\\n"</span> <span class="o">+</span>
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<span class="s">" Wikipedia!\n"</span> <span class="o">+</span>
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<span class="s">"# Add spaces to the key\n"</span> <span class="o">+</span>
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<span class="s">"key\\ with\\ spaces = This is the value that could be looked up with the key \"key with spaces\".\n"</span> <span class="o">+</span>
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<span class="s">"# Unicode\n"</span> <span class="o">+</span>
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<span class="s">"tab : \\u0009"</span><span class="o">;</span>
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<span class="o">}</span>
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<span class="o">}</span>
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</code></pre>
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<a name="register-the-language-code-style-settings-provider" class="elem-anchor"></a>
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<h3>16.5. Register the language code style settings provider<a href="#register-the-language-code-style-settings-provider" class="anchor-link"><span></span></a></h3>
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<pre><code class="code-block__wrapper code-block _highlighted lang_xml"><span class="nt"><langCodeStyleSettingsProvider</span> <span class="na">implementation=</span><span class="s">"com.simpleplugin.SimpleLanguageCodeStyleSettingsProvider"</span><span class="nt">/></span>
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</code></pre>
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<a name="run-the-project" class="elem-anchor"></a>
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<h3>16.6. Run the project<a href="#run-the-project" class="anchor-link"><span></span></a></h3>
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<p><img src="img/code_style_settings.png" alt="Code Style Settings" /></p>
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