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themes_customize.md: Grammar and style cleanup

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topics/basics/getting_started/theme/themes_customize.md
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@ -12,7 +12,7 @@
A theme is customized by adding information to the theme description file that overrides the base (_Light_ or _Darcula_) theme.
For plugin developers, [Exposing Theme Metadata](themes_metadata.md) discusses the format of customization keys and information about how to provide it to Theme authors.
For plugin developers, [](themes_metadata.md) discusses the format of customization keys and information about how to provide it to Theme authors.
> [Color Highlighter Plugin](https://plugins.jetbrains.com/plugin/13309-color-highlighter) adds additional color preview inside the editor.
>
@ -30,7 +30,7 @@ Colors are defined by six-digit RGB or eight-digit RGBA hexadecimal notation.
### Theme Reference Implementations
When learning new syntax, it is often useful to have some existing implementations for reference.
When learning a new syntax, it is often useful to have some existing implementations for reference.
For example, refer to the [Theme description file](%gh-ic%/platform/platform-resources/src/themes/HighContrast.theme.json) for the IntelliJ IDEA _High Contrast_ Theme.
It may also help to review [themes available](https://plugins.jetbrains.com/search?headline=164-theme&tags=Theme) at the JetBrains Marketplace.
@ -90,8 +90,8 @@ Icon Palettes are predefined theme color keys that describe a single color in an
#### Icon Colors in "Actions" and "Objects" Contexts
IntelliJ Platform has default icon colors defined for `Actions` and `Objects` contexts.
* `Actions` are Theme keys for icons that appear in the context of toolbars, and represent actions such as _Compile_, _Run_, or _Debug_.
* `Objects` are Theme keys for icons that appear in the contexts of lists and trees, and represent entities like files, symbols, or run and debug configurations.
* `Actions` are Theme keys for icons that appear in the context of toolbars and represent actions such as _Compile_, _Run_, or _Debug_.
* `Objects` are Theme keys for icons that appear in the contexts of lists and trees and represent entities like files, symbols, or run and debug configurations.
The [UI Guideline for Icons](icons_style.md) defines the default hexadecimal RGB values of colors for `Actions` and `Objects` keys.
Note that this document refers to `Objects` keys as "Noun icons."
@ -128,7 +128,7 @@ An icon replacement is described within the `icon {}` section of a Theme descrip
Note that icon replacement key-value pairs appear outside the `ColorPalette` section.
For icon substitutions, the `key` is the path to the default icon image.
This path is derived from the `AllIcons.[Group].[IconName]` path in icon section reported by the [UI Inspector](internal_ui_inspector.md).
This path is derived from the `AllIcons.[Group].[IconName]` path in the <control>icon</control> property reported by the [UI Inspector](internal_ui_inspector.md).
For example, the _Build_ (hammer) icon in the toolbar has the path `Allcons.Actions.Compile` as reported by the UI Inspector.
Therefore, the `key` for the _Build_ icon is `/actions/compile.svg`.
@ -171,7 +171,7 @@ Methods for finding UI control keys are in the [Finding Attribute Keys for UI Co
#### Customizing All UI Control Colors with the Same Property
All UI Controls with the same `property` portion of their key can be set to the same color.
All UI Controls with the same `property` part of their key can be set to the same color.
This customization is done using the wildcard `"*": {}` section in the Theme description file.
A key-value pair is inserted in this section, but only the `property` portion of the key is specified.
The `value` is the custom color.
@ -235,9 +235,9 @@ Methods for identifying UI control keys are in the [Finding Attribute Keys for U
For example, here is an excerpt from the IntelliJ Platform [High Contrast Theme](%gh-ic%/platform/platform-resources/src/themes/HighContrast.theme.json):
Note that a Theme file can mix versions of `property` identifiers:
* The first three `property` entries are recognized by release 2019.1 and ignored by subsequent releases because they are defined by new `property` identifiers.
* The `underlineColor` `property` is recognized by release 2019.1 and subsequent releases.
* The `underlineHeight` `property` was introduced in release 2019.2, and is ignored by previous releases.
* The first three `property` entries are recognized by release 2019.1 and ignored by newer releases because they are defined by new `property` identifiers.
* The `underlineColor` `property` is recognized by release 2019.1 and newer releases.
* The `underlineHeight` `property` was introduced in release 2019.2 and is ignored by previous releases.
* The `underlinedTabBackground` `property` was introduced in release 2019.2, replaces the 2019.1 `selectedBackground`, and is ignored by previous releases.
* The `inactiveColoredFileBackground` `property` was introduced in release 2019.2, replaces the 2019.1 `inactiveMaskColor`, and is ignored by previous releases.
@ -265,7 +265,7 @@ The color and geometry of borders used in UI controls can be customized by key-v
The format of keys for borders is `element.property`, where:
* `element` is the type of UI control containing a border, such as a window or a popup menu.
* `property` is the desired border appearance, for example:
* `border` is the border width (in pixels) specified as a top, left, bottom, and right widths.
* `border` is the border width (in pixels) specified as top, left, bottom, and right widths.
Border color is also (optionally) specified as hexadecimal RGB, e.g. `E6E6E6` with no `#` character.
* `borderInsets` is the inset distance (in pixels) from the edge of the `element` to the border.
It is specified as top, left, bottom, and right insets.
@ -273,7 +273,8 @@ The format of keys for borders is `element.property`, where:
Methods for identifying UI control keys are in the [Finding Attribute Keys for UI Controls](#finding-attribute-keys-for-ui-controls) section.
#### Customizing the Border Appearance of Specific UI Controls
Adding a key-value pair to the `"ui": {}` section of a Theme description file customizes the appearance of borders for specific UI control types.
Adding a key-value pair to the `ui` section of a theme description file customizes the appearance of borders for specific UI control types.
The following example sets a new border width and color for all windows:
@ -290,21 +291,19 @@ In this example, the customized border supersedes the default definition and any
## Finding Attribute Keys for UI Controls
There are hundreds of UI control `element.property` keys defined in the IntelliJ Platform UI.
Some keys and strategies for applying them can be gleaned from the [theme reference implementations](#theme-reference-implementations).
For a general search, here some suggested methods for locating UI control keys.
Some keys and strategies for applying them can be found in the [theme reference implementations](#theme-reference-implementations).
The sections below describe suggested methods for locating UI control keys.
### Finding a UI Control Key Using Code Completion in the Editor
The preferred method of finding UI control keys is to use the [Code Completion](https://www.jetbrains.com/help/idea/auto-completing-code.html#Auto-Completing_Code.xml) feature in the editor.
Note that some keys presented by the code completion feature may be deprecated.
Note that some of the completed keys may be deprecated.
New entries in the `"ui": {}` section will invoke the code completion popup, as shown below:
![UI Control Key Code Completion](ui_control_key_completion.png){width="600"}
Beginning with version 2019.2 of the IntelliJ Platform, the editor has added features for Code Completion and [Quick Documentation](https://www.jetbrains.com/help/idea/viewing-reference-information.html#inline-quick-documentation) to show the release in which a UI control key began to be supported.
It appears as the <control>Since</control> attribute in editor popups.
In the Quick Documentation popup, the format is e.g., <control>Since: 2019.2</control>.
The Code Completion popup is similar, but the format is e.g., <control>[Since 2019.2]</control>.
Code completion and [quick documentation](https://www.jetbrains.com/help/idea/viewing-reference-information.html#inline-quick-documentation) popup items include information about the versions in which specific UI control keys started being supported.
For example, in the above screenshot, <control>ToolWindow.background</control> property is supported since 2021.3.
### Finding a UI Control Key Using Laf Defaults UI