SQL Operations Studio Public Preview 1 (0.23) release source code

src/vs/base/browser/ui/scrollbar/verticalScrollbar.ts

@@ -0,0 +1,95 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+'use strict';
+
+import { AbstractScrollbar, ScrollbarHost, ISimplifiedMouseEvent } from 'vs/base/browser/ui/scrollbar/abstractScrollbar';
+import { StandardMouseWheelEvent } from 'vs/base/browser/mouseEvent';
+import { ScrollableElementResolvedOptions } from 'vs/base/browser/ui/scrollbar/scrollableElementOptions';
+import { Scrollable, ScrollEvent, ScrollbarVisibility, INewScrollPosition } from 'vs/base/common/scrollable';
+import { ScrollbarState } from 'vs/base/browser/ui/scrollbar/scrollbarState';
+import { ARROW_IMG_SIZE } from 'vs/base/browser/ui/scrollbar/scrollbarArrow';
+
+export class VerticalScrollbar extends AbstractScrollbar {
+
+	constructor(scrollable: Scrollable, options: ScrollableElementResolvedOptions, host: ScrollbarHost) {
+		super({
+			lazyRender: options.lazyRender,
+			host: host,
+			scrollbarState: new ScrollbarState(
+				(options.verticalHasArrows ? options.arrowSize : 0),
+				(options.vertical === ScrollbarVisibility.Hidden ? 0 : options.verticalScrollbarSize),
+				// give priority to vertical scroll bar over horizontal and let it scroll all the way to the bottom
+				0
+			),
+			visibility: options.vertical,
+			extraScrollbarClassName: 'vertical',
+			scrollable: scrollable
+		});
+
+		if (options.verticalHasArrows) {
+			let arrowDelta = (options.arrowSize - ARROW_IMG_SIZE) / 2;
+			let scrollbarDelta = (options.verticalScrollbarSize - ARROW_IMG_SIZE) / 2;
+
+			this._createArrow({
+				className: 'up-arrow',
+				top: arrowDelta,
+				left: scrollbarDelta,
+				bottom: void 0,
+				right: void 0,
+				bgWidth: options.verticalScrollbarSize,
+				bgHeight: options.arrowSize,
+				onActivate: () => this._host.onMouseWheel(new StandardMouseWheelEvent(null, 0, 1)),
+			});
+
+			this._createArrow({
+				className: 'down-arrow',
+				top: void 0,
+				left: scrollbarDelta,
+				bottom: arrowDelta,
+				right: void 0,
+				bgWidth: options.verticalScrollbarSize,
+				bgHeight: options.arrowSize,
+				onActivate: () => this._host.onMouseWheel(new StandardMouseWheelEvent(null, 0, -1)),
+			});
+		}
+
+		this._createSlider(0, Math.floor((options.verticalScrollbarSize - options.verticalSliderSize) / 2), options.verticalSliderSize, null);
+	}
+
+	protected _updateSlider(sliderSize: number, sliderPosition: number): void {
+		this.slider.setHeight(sliderSize);
+		this.slider.setTop(sliderPosition);
+	}
+
+	protected _renderDomNode(largeSize: number, smallSize: number): void {
+		this.domNode.setWidth(smallSize);
+		this.domNode.setHeight(largeSize);
+		this.domNode.setRight(0);
+		this.domNode.setTop(0);
+	}
+
+	public onDidScroll(e: ScrollEvent): boolean {
+		this._shouldRender = this._onElementScrollSize(e.scrollHeight) || this._shouldRender;
+		this._shouldRender = this._onElementScrollPosition(e.scrollTop) || this._shouldRender;
+		this._shouldRender = this._onElementSize(e.height) || this._shouldRender;
+		return this._shouldRender;
+	}
+
+	protected _mouseDownRelativePosition(offsetX: number, offsetY: number): number {
+		return offsetY;
+	}
+
+	protected _sliderMousePosition(e: ISimplifiedMouseEvent): number {
+		return e.posy;
+	}
+
+	protected _sliderOrthogonalMousePosition(e: ISimplifiedMouseEvent): number {
+		return e.posx;
+	}
+
+	public writeScrollPosition(target: INewScrollPosition, scrollPosition: number): void {
+		target.scrollTop = scrollPosition;
+	}
+}