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/*---------------------------------------------------------------------------------------------
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License. See License.txt in the project root for license information.
*--------------------------------------------------------------------------------------------*/
import { Dimension } from 'vs/base/browser/dom';
import { Orientation, OrthogonalEdge, Sash, SashState } from 'vs/base/browser/ui/sash/sash';
import { Emitter, Event } from 'vs/base/common/event';
import { DisposableStore } from 'vs/base/common/lifecycle';
export interface IResizeEvent {
dimension: Dimension;
done: boolean;
north?: boolean;
east?: boolean;
south?: boolean;
west?: boolean;
}
export class ResizableHTMLElement {
readonly domNode: HTMLElement;
private readonly _onDidWillResize = new Emitter<void>();
readonly onDidWillResize: Event<void> = this._onDidWillResize.event;
private readonly _onDidResize = new Emitter<IResizeEvent>();
readonly onDidResize: Event<IResizeEvent> = this._onDidResize.event;
private readonly _northSash: Sash;
private readonly _eastSash: Sash;
private readonly _southSash: Sash;
private readonly _westSash: Sash;
private readonly _sashListener = new DisposableStore();
private _size = new Dimension(0, 0);
private _minSize = new Dimension(0, 0);
private _maxSize = new Dimension(Number.MAX_SAFE_INTEGER, Number.MAX_SAFE_INTEGER);
private _preferredSize?: Dimension;
constructor() {
this.domNode = document.createElement('div');
this._eastSash = new Sash(this.domNode, { getVerticalSashLeft: () => this._size.width }, { orientation: Orientation.VERTICAL });
this._westSash = new Sash(this.domNode, { getVerticalSashLeft: () => 0 }, { orientation: Orientation.VERTICAL });
this._northSash = new Sash(this.domNode, { getHorizontalSashTop: () => 0 }, { orientation: Orientation.HORIZONTAL, orthogonalEdge: OrthogonalEdge.North });
this._southSash = new Sash(this.domNode, { getHorizontalSashTop: () => this._size.height }, { orientation: Orientation.HORIZONTAL, orthogonalEdge: OrthogonalEdge.South });
this._northSash.orthogonalStartSash = this._westSash;
this._northSash.orthogonalEndSash = this._eastSash;
this._southSash.orthogonalStartSash = this._westSash;
this._southSash.orthogonalEndSash = this._eastSash;
let currentSize: Dimension | undefined;
let deltaY = 0;
let deltaX = 0;
this._sashListener.add(Event.any(this._northSash.onDidStart, this._eastSash.onDidStart, this._southSash.onDidStart, this._westSash.onDidStart)(() => {
if (currentSize === undefined) {
this._onDidWillResize.fire();
currentSize = this._size;
deltaY = 0;
deltaX = 0;
}
}));
this._sashListener.add(Event.any(this._northSash.onDidEnd, this._eastSash.onDidEnd, this._southSash.onDidEnd, this._westSash.onDidEnd)(() => {
if (currentSize !== undefined) {
currentSize = undefined;
deltaY = 0;
deltaX = 0;
this._onDidResize.fire({ dimension: this._size, done: true });
}
}));
this._sashListener.add(this._eastSash.onDidChange(e => {
if (currentSize) {
deltaX = e.currentX - e.startX;
this.layout(currentSize.height + deltaY, currentSize.width + deltaX);
this._onDidResize.fire({ dimension: this._size, done: false, east: true });
}
}));
this._sashListener.add(this._westSash.onDidChange(e => {
if (currentSize) {
deltaX = -(e.currentX - e.startX);
this.layout(currentSize.height + deltaY, currentSize.width + deltaX);
this._onDidResize.fire({ dimension: this._size, done: false, west: true });
}
}));
this._sashListener.add(this._northSash.onDidChange(e => {
if (currentSize) {
deltaY = -(e.currentY - e.startY);
this.layout(currentSize.height + deltaY, currentSize.width + deltaX);
this._onDidResize.fire({ dimension: this._size, done: false, north: true });
}
}));
this._sashListener.add(this._southSash.onDidChange(e => {
if (currentSize) {
deltaY = e.currentY - e.startY;
this.layout(currentSize.height + deltaY, currentSize.width + deltaX);
this._onDidResize.fire({ dimension: this._size, done: false, south: true });
}
}));
this._sashListener.add(Event.any(this._eastSash.onDidReset, this._westSash.onDidReset)(e => {
if (this._preferredSize) {
this.layout(this._size.height, this._preferredSize.width);
this._onDidResize.fire({ dimension: this._size, done: true });
}
}));
this._sashListener.add(Event.any(this._northSash.onDidReset, this._southSash.onDidReset)(e => {
if (this._preferredSize) {
this.layout(this._preferredSize.height, this._size.width);
this._onDidResize.fire({ dimension: this._size, done: true });
}
}));
}
dispose(): void {
this._northSash.dispose();
this._southSash.dispose();
this._eastSash.dispose();
this._westSash.dispose();
this._sashListener.dispose();
this._onDidResize.dispose();
this._onDidWillResize.dispose();
this.domNode.remove();
}
enableSashes(north: boolean, east: boolean, south: boolean, west: boolean): void {
this._northSash.state = north ? SashState.Enabled : SashState.Disabled;
this._eastSash.state = east ? SashState.Enabled : SashState.Disabled;
this._southSash.state = south ? SashState.Enabled : SashState.Disabled;
this._westSash.state = west ? SashState.Enabled : SashState.Disabled;
}
layout(height: number = this.size.height, width: number = this.size.width): void {
const { height: minHeight, width: minWidth } = this._minSize;
const { height: maxHeight, width: maxWidth } = this._maxSize;
height = Math.max(minHeight, Math.min(maxHeight, height));
width = Math.max(minWidth, Math.min(maxWidth, width));
const newSize = new Dimension(width, height);
if (!Dimension.equals(newSize, this._size)) {
this.domNode.style.height = height + 'px';
this.domNode.style.width = width + 'px';
this._size = newSize;
this._northSash.layout();
this._eastSash.layout();
this._southSash.layout();
this._westSash.layout();
}
}
clearSashHoverState(): void {
this._eastSash.clearSashHoverState();
this._westSash.clearSashHoverState();
this._northSash.clearSashHoverState();
this._southSash.clearSashHoverState();
}
get size() {
return this._size;
}
set maxSize(value: Dimension) {
this._maxSize = value;
}
get maxSize() {
return this._maxSize;
}
set minSize(value: Dimension) {
this._minSize = value;
}
get minSize() {
return this._minSize;
}
set preferredSize(value: Dimension | undefined) {
this._preferredSize = value;
}
get preferredSize() {
return this._preferredSize;
}
}
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