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38 lines
2.1 KiB
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38 lines
2.1 KiB
Markdown
[//]: # (title: Modifying Project View Structure)
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<!-- Copyright 2000-2021 JetBrains s.r.o. and other contributors. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file. -->
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This tutorial is meant to illustrate how the project tree structure view appearance can be modified programmatically.
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If you need to know more about basic concepts of a project view in IntelliJ-based IDEs, please refer to [Exploring The Project Structure](https://www.jetbrains.com/idea/help/exploring-the-project-structure.html#d164891e120) of [IntelliJ IDEA Web Help](https://www.jetbrains.com/idea/help/intellij-idea.html).
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This topic describes the [treeStructureProvider](https://github.com/JetBrains/intellij-sdk-code-samples/tree/main/tree_structure_provider) sample plugin.
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Series of steps below show how to filter out and keep visible only text files and directories in the Project View Panel.
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## Register Custom TreeStructure Provider
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Add new `com.intellij.treeStructureProvider` extension to the [plugin.xml](https://github.com/JetBrains/intellij-sdk-code-samples/blob/main/tree_structure_provider/src/main/resources/META-INF/plugin.xml)
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```java
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<extensions defaultExtensionNs="com.intellij">
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<treeStructureProvider implementation="org.intellij.sdk.treeStructureProvider.TextOnlyTreeStructureProvider"/>
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</extensions>
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```
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## Implement Custom TreeStructureProvider
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To provide custom Structure View behaviour, implement [`TreeStructureProvider`](upsource:///platform/editor-ui-api/src/com/intellij/ide/projectView/TreeStructureProvider.java) with nodes filtering logic in `modify()` method.
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The example below shows how to filter out all the Project View nodes except those which correspond to text files and directories.
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```java
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```
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{src="tree_structure_provider/src/main/java/org/intellij/sdk/treeStructureProvider/TextOnlyTreeStructureProvider.java"}
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## Compile and Run the Plugin
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See [Code Samples](code_samples.md) on how to set up and run the plugin.
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After going through the steps described above you can see only text files and directories belonging to a project in the Project View.
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