Adds changes hover to file annotations

CHANGELOG.md

@@ -5,12 +5,19 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/) and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased]
+### Added
+- Adds `changes` (diff) hover annotation support to both the `gutter` and `hover` file blame annotations
+- Adds `gitlens.annotations.file.gutter.hover.changes` setting to specify whether or not to provide a changes (diff) hover annotation over the gutter blame annotations
+- Adds `gitlens.annotations.file.hover.details` setting to specify whether or not to provide a commit details hover annotation over each line
+- Adds `gitlens.annotations.file.hover.changes` setting to specify whether or not to provide a changes (diff) hover annotation over each line
+
 ### Changed
 - Changes `gitlens.codeLens.customLocationSymbols` setting to both include and exclude (using a `!` prefix) symbols and therefore is always applied
 
 ### Removed
 - Removes `Custom` from the `gitlens.codeLens.locations` setting as it wasn't really required
 - Removes properties (symbol `Property`) from being included in the `Blocks` option of the `gitlens.codeLens.locations` setting -- can be easily re-added by setting `"gitlens.codeLens.customLocationSymbols": [ "Property" ]` if desired
+- Removes `gitlens.annotations.file.hover.wholeLine` setting as it didn't really make sense
 
 ### Fixed
 - Fixes issue where changing `gitlens.blame.file.annotationType` wouldn't correctly update the blame annotations if they were currently active

README.md

@@ -43,10 +43,13 @@ GitLens provides an unobtrusive blame annotation at the end of the current line,
   - Contains the commit message and date, by [default](#file-blame-annotation-settings)
   - Adds a `details` hover annotation to the line's annotation, which provides more commit details ([optional](#file-blame-annotation-settings), on by default)
 
-    ![File Blame Annotations (hover)](https://raw.githubusercontent.com/eamodio/vscode-gitlens/master/images/screenshot-file-blame-annotations.png)
+    ![File Details Blame Annotations (hover)](https://raw.githubusercontent.com/eamodio/vscode-gitlens/master/images/screenshot-file-blame-annotations.png)
 
     - Provides a **quick-access command bar** with `Open Changes`, `Blame Previous Revision`, `Open in Remote`, and `Show More Actions` command buttons
     - Clicking the commit id will run the `Show Commit Details` command (`gitlens.showQuickCommitDetails`)
+  - Adds a `changes` (diff) hover annotation to the line's annotation, which provides **instant access** to the line's previous version ([optional](#file-blame-annotation-settings), on by default)
+    - Clicking on `Changes` will run the `Compare File Revisions` command (`gitlens.diffWith`)
+    - Clicking the current and previous commit ids will run the `Show Commit Details` command (`gitlens.showQuickCommitDetails`)
   - Adds a `heatmap` (age) indicator to the gutter annotations (on right edge by [default](#file-blame-annotation-settings)), which provides an easy, at-a-glance way to tell the age of a line ([optional](#file-blame-annotation-settings), on by default)
     - Indicator ranges from bright yellow (newer) to dark brown (older)
   - Press `Escape` to quickly toggle the annotations off
@@ -76,7 +79,7 @@ GitLens provides an unobtrusive blame annotation at the end of the current line,
 
 - Adds on-demand, [customizable](#file-recent-changes-annotation-settings) and [themeable](#theme-settings), **recent changes annotations** of the whole file
   - Highlights all of lines changed in the most recent commit
-  - Adds a `details` hover annotation to each line, which provides more commit details ([optional](#file-blame-annotation-settings), on by default)
+  - Adds a `details` hover annotation to each line, which provides more commit details ([optional](#file-recent-changes-annotation-settings), on by default)
     - Clicking the commit id will run the `Show Commit Details` command (`gitlens.showQuickCommitDetails`)
   - Adds a `changes` (diff) hover annotation to each line, which provides **instant** access to the line's previous version ([optional](#file-recent-changes-annotation-settings), on by default)
     - Clicking on `Changes` will run the `Compare File Revisions` command (`gitlens.diffWith`)
@@ -316,9 +319,11 @@ GitLens is highly customizable and provides many configuration settings to allow
 |`gitlens.annotations.file.gutter.heatmap.enabled`|Specifies whether or not to provide a heatmap indicator in the gutter blame annotations
 |`gitlens.annotations.file.gutter.heatmap.location`|Specifies where the heatmap indicators will be shown in the gutter blame annotations<br />`left` - adds a heatmap indicator on the left edge of the gutter blame annotations<br />`right` - adds a heatmap indicator on the right edge of the gutter blame annotations
 |`gitlens.annotations.file.gutter.hover.details`|Specifies whether or not to provide a commit details hover annotation over the gutter blame annotations
+|`gitlens.annotations.file.gutter.hover.changes`|Specifies whether or not to provide a changes (diff) hover annotation over the gutter blame annotations
 |`gitlens.annotations.file.gutter.hover.wholeLine`|Specifies whether or not to trigger hover annotations over the whole line
+|`gitlens.annotations.file.hover.details`|Specifies whether or not to provide a commit details hover annotation over each line
+|`gitlens.annotations.file.hover.changes`|Specifies whether or not to provide a changes (diff) hover annotation over each line
 |`gitlens.annotations.file.hover.heatmap.enabled`|Specifies whether or not to provide heatmap indicators on the left edge of each line
-|`gitlens.annotations.file.hover.wholeLine`|Specifies whether or not to trigger hover annotations over the whole line
 
 #### Line Blame Annotation Settings
 

package.json

@@ -107,20 +107,30 @@
                     "default": true,
                     "description": "Specifies whether or not to provide a commit details hover annotation over the gutter blame annotations"
                 },
+                "gitlens.annotations.file.gutter.hover.changes": {
+                    "type": "boolean",
+                    "default": true,
+                    "description": "Specifies whether or not to provide a changes (diff) hover annotation over the gutter blame annotations"
+                },
                 "gitlens.annotations.file.gutter.hover.wholeLine": {
                     "type": "boolean",
                     "default": true,
                     "description": "Specifies whether or not to trigger hover annotations over the whole line"
                 },
-                "gitlens.annotations.file.hover.heatmap.enabled": {
+                "gitlens.annotations.file.hover.details": {
                     "type": "boolean",
                     "default": true,
-                    "description": "Specifies whether or not to provide heatmap indicators on the left edge of each line"
+                    "description": "Specifies whether or not to provide a commit details hover annotation over each line"
                 },
-                "gitlens.annotations.file.hover.wholeLine": {
+                "gitlens.annotations.file.hover.changes": {
                     "type": "boolean",
                     "default": true,
-                    "description": "Specifies whether or not to trigger hover annotations over the whole line"
+                    "description": "Specifies whether or not to provide a changes (diff) hover annotation over each line"
+                },
+                "gitlens.annotations.file.hover.heatmap.enabled": {
+                    "type": "boolean",
+                    "default": true,
+                    "description": "Specifies whether or not to provide heatmap indicators on the left edge of each line"
                 },
                 "gitlens.annotations.file.recentChanges.hover.details": {
                     "type": "boolean",

src/annotations/blameAnnotationProvider.ts

@@ -5,7 +5,7 @@ import { AnnotationProviderBase } from './annotationProvider';
 import { Annotations, endOfLineIndex } from './annotations';
 import { GitBlame, GitCommit, GitService, GitUri } from '../gitService';
 
-export abstract class BlameAnnotationProviderBase extends AnnotationProviderBase implements HoverProvider {
+export abstract class BlameAnnotationProviderBase extends AnnotationProviderBase {
 
     protected _blame: Promise<GitBlame | undefined>;
     protected _hoverProviderDisposable: Disposable;
@@ -74,23 +74,22 @@ export abstract class BlameAnnotationProviderBase extends AnnotationProviderBase
         return blame;
     }
 
-    registerHoverProvider() {
-        this._hoverProviderDisposable = languages.registerHoverProvider({ pattern: this.document.uri.fsPath }, this);
-    }
-
-    async provideHover(document: TextDocument, position: Position, token: CancellationToken): Promise<Hover | undefined> {
-        // Avoid double annotations if we are showing the whole-file hover blame annotations
-        if (this._config.blame.line.enabled && this.editor.selection.start.line === position.line) return undefined;
+    registerHoverProviders(providers: { details: boolean, changes: boolean }) {
+        if (!providers.details && !providers.changes) return;
 
-        const cfg = this._config.annotations.file.gutter;
-        if (!cfg.hover.wholeLine && position.character !== 0) return undefined;
-
-        const blame = await this.getBlame();
-        if (blame === undefined) return undefined;
+        const subscriptions: Disposable[] = [];
+        if (providers.changes) {
+            subscriptions.push(languages.registerHoverProvider({ pattern: this.document.uri.fsPath }, { provideHover: this.provideChangesHover.bind(this) } as HoverProvider));
+        }
+        if (providers.details) {
+            subscriptions.push(languages.registerHoverProvider({ pattern: this.document.uri.fsPath }, { provideHover: this.provideDetailsHover.bind(this) } as HoverProvider));
+        }
 
-        const line = blame.lines[position.line];
+        this._hoverProviderDisposable = Disposable.from(...subscriptions);
+    }
 
-        const commit = blame.commits.get(line.sha);
+    async provideDetailsHover(document: TextDocument, position: Position, token: CancellationToken): Promise<Hover | undefined> {
+        const commit = await this.getCommitForHover(position);
         if (commit === undefined) return undefined;
 
         // Get the full commit message -- since blame only returns the summary
@@ -107,4 +106,27 @@ export abstract class BlameAnnotationProviderBase extends AnnotationProviderBase
         const message = Annotations.getHoverMessage(logCommit || commit, this._config.defaultDateFormat, this.git.hasRemotes(commit.repoPath), this._config.blame.file.annotationType);
         return new Hover(message, document.validateRange(new Range(position.line, 0, position.line, endOfLineIndex)));
     }
+
+    async provideChangesHover(document: TextDocument, position: Position, token: CancellationToken): Promise<Hover | undefined> {
+        const commit = await this.getCommitForHover(position);
+        if (commit === undefined) return undefined;
+
+        const hover = await Annotations.changesHover(commit, position.line, await GitUri.fromUri(document.uri, this.git), this.git);
+        return new Hover(hover.hoverMessage!, document.validateRange(new Range(position.line, 0, position.line, endOfLineIndex)));
+    }
+
+    private async getCommitForHover(position: Position): Promise<GitCommit | undefined> {
+        // Avoid double annotations if we are showing the whole-file hover blame annotations
+        if (this._config.blame.line.enabled && this.editor.selection.start.line === position.line) return undefined;
+
+        const cfg = this._config.annotations.file.gutter;
+        if (!cfg.hover.wholeLine && position.character !== 0) return undefined;
+
+        const blame = await this.getBlame();
+        if (blame === undefined) return undefined;
+
+        const line = blame.lines[position.line];
+
+        return blame.commits.get(line.sha);
+    }
 }

src/annotations/gutterBlameAnnotationProvider.ts

@@ -119,10 +119,7 @@ export class GutterBlameAnnotationProvider extends BlameAnnotationProviderBase {
         const duration = process.hrtime(start);
         Logger.log(`${(duration[0] * 1000) + Math.floor(duration[1] / 1000000)} ms to compute gutter blame annotations`);
 
-        if (cfg.hover.details) {
-            this.registerHoverProvider();
-        }
-
+        this.registerHoverProviders(cfg.hover);
         this.selection(shaOrLine, blame);
         return true;
     }

src/annotations/hoverBlameAnnotationProvider.ts

@@ -63,7 +63,7 @@ export class HoverBlameAnnotationProvider extends BlameAnnotationProviderBase {
             Logger.log(`${(duration[0] * 1000) + Math.floor(duration[1] / 1000000)} ms to compute hover blame annotations`);
         }
 
-        this.registerHoverProvider();
+        this.registerHoverProviders(cfg);
         this.selection(shaOrLine, blame);
         return true;
     }

src/configuration.ts

@@ -238,15 +238,17 @@ export interface IConfig {
                 };
                 hover: {
                     details: boolean;
+                    changes: boolean;
                     wholeLine: boolean;
                 };
             };
 
             hover: {
+                details: boolean;
+                changes: boolean;
                 heatmap: {
                     enabled: boolean;
                 };
-                wholeLine: boolean;
             };
 
             recentChanges: {
@@ -267,8 +269,8 @@ export interface IConfig {
                 format: string;
                 dateFormat: string | null;
                 hover: {
-                    changes: boolean;
                     details: boolean;
+                    changes: boolean;
                     wholeLine: boolean;
                 };
             };

src/currentLineController.ts

@@ -338,13 +338,7 @@ export class CurrentLineController extends Disposable {
                     break;
                 }
                 case FileAnnotationType.Hover: {
-                    const cfgHover = this._config.annotations.file.hover;
-                    if (cfgHover.wholeLine) {
-                        showStartIndex = 0;
-                    }
-                    else if (showStartIndex !== 0) {
-                        showAtStart = true;
-                    }
+                    showStartIndex = 0;
 
                     break;
                 }