PLEASE NOTE: This project is no longer maintained due to an added built-in functionality in IntelliJ to preview files, which works quite similar to this plugin.

Quick File Preview (IntelliJ plugin)

Compatible with IDEA PhpStorm WebStorm PyCharm RubyMine AppCode CLion Gogland DataGrip Rider MPS Android Studio

This plugin enables a quick file preview on simple selecting files in Project View - similar to the preview in Sublime or VSCode.

Features:

• show preview (open temporary editor) of selected file
• focus editor of selected file if already opened
• settings page to individualize preview behavior
• customize the editor tab representation (title & color)
• since 1.5.2 keep collapse/expand state in project view if parent node is collapsed (customizable, enabled by default)

Please note: If Autoscroll to source/Open files with single click is enabled, the actual editor tab is opened instead of a preview. To make proper use of the preview tab, this option must be disabled!

(inspired by https://youtrack.jetbrains.com/issue/IDEA-130918)

Settings (defaults)

Project View

Preview behavior

Defines when the Preview Editor tab should be shown in general.

Auto preview on select (default)

Whenever the focused file in the Project View changes, a preview is shown or the already existing editor is focused.

Manual preview

Whenever the focused file in the Project View changes, the already existing editor is focused. The Preview Editor tab is only shown when pressing <SPACE>. The preview stays open on further navigation and must also be closed manually.

Toggle tree expand/collapse by single click (enabled)

Defines the required number of clicks to expand/collapse a node in Project View tree: one click if option is enabled (plugin default), two clicks if option is disabled (IDE default).

Keep expand/collapse state (enabled)

If enabled, the expand/collapse states of the folders are kept when a parent folder gets collapsed/expanded.

Close preview if no file selected (enabled)

Switching the focus in the Project View to an directory or non-displayable element, the preview is closed. Disable to keep the last Preview Editor tab.

Please note: Due to unwanted side effects, this setting has no effect if Always Select Opened File is enabled.

Preview Editor Tab

Tab title pattern (<<%s>>)

Defines how the file name is formatted in the preview tab title, while %s represents the filename. Leaving the field blank will show the title like for usual editor tabs. Tab coloring can be used to distinguish.

Tab color (disabled)

Sets a custom background color for the preview tab.

Close preview if other tab is selected (disabled)

Switching editor tabs does not close the current Preview Editor tab on default.

Convert to default editor tab when editing previewed content (enabled)

If activated, the tab becomes a normal editor tab when a change happened during preview, so it will stay open if another file gets selected.

Please note: A default editor tab can always be enforced by <DOUBLE-CLICK> or <ENTER> on the file in Project View.

Installation

Install it from the Jetbrains plugin repository within your IDE (recommended):

• File > Settings > Plugins > Browse repositories... > Search 'File Preview' > Category 'Editor'

You can also download the JAR package from the Jetbrains plugin repository or from GitHub Releases and add it manually to your plugins:

• File > Settings > Plugins > Install plugin from disk...

Build & Run from source code

Clone this repository (https://github.com/SeeSharpSoft/intellij-file-preview.git).

Build the plugin:

gradle build

Start IDE:

gradle runIdea