Framework WIP:

- App areas resizable with styles & saving to preference
- App sides fully hidden when no content

kdots/head.tpl

@@ -51,6 +51,8 @@
 	<!-- Fake app -->
 	<egw-app name="fake app" class="placeholder">
 		<div style="border: 1px dotted">Something inside the app - main</div>
+		<div slot="left">Left content</div>
+		<div slot="right">right content</div>
 	</egw-app>
 </egw-framework>
 

kdots/js/EgwFrameworkApp.styles.ts

@@ -35,16 +35,42 @@ export default css`
 		grid-column: start / end;
 		grid-row: start / end;
 		grid-template-rows: subgrid;
+		--min: var(--left-min, 0px);
+		--max: var(--left-max, 20%);
 	}
 
 	.egw_fw_app__innerSplit {
 		grid-template-rows: subgrid;
 		grid-column-end: -1;
 		grid-row: start / end;
+		--max: calc(100% - var(--right-min, 0px));
+		--min: calc(100% - var(--right-max, 50%));
+	}
+
+	.egw_fw_app__innerSplit.no-content {
+		--min: 100%;
 	}
 
 	sl-split-panel::part(divider) {
 		grid-row: start / end;
+		font-size: 20px;
+	}
+
+	sl-split-panel > sl-icon {
+		position: absolute;
+		border-radius: var(--sl-border-radius-small);
+		background-color: var(--primary-background-color);
+		color: var(--sl-color-neutral-0);
+		padding: 0.5rem 0.125rem;
+		z-index: var(--sl-z-index-drawer);
+	}
+
+	sl-split-panel.no-content {
+		--divider-width: 0px;
+	}
+
+	sl-split-panel.no-content::part(divider) {
+		display: none;
 	}
 
 	.egw_fw_app__aside {

kdots/js/EgwFrameworkApp.ts

@@ -5,11 +5,13 @@ import {state} from "lit/decorators/state.js";
 import {classMap} from "lit/directives/class-map.js";
 
 import styles from "./EgwFrameworkApp.styles";
+import {SlSplitPanel} from "@shoelace-style/shoelace";
+import {HasSlotController} from "../../api/js/etemplate/Et2Widget/slot";
 
 /**
  * @summary Application component inside EgwFramework
  *
- * @dependency sl-icon-button
+ * @dependency sl-split-panel
  *
  * @slot - Main application content.  Other slots are normally hidden if they have no content
  * @slot header - Top of app, contains logo, app icons.
@@ -29,7 +31,10 @@ import styles from "./EgwFrameworkApp.styles";
  * @csspart right - Right optional content.
  * @csspart footer - Very bottom of the main content.
  *
- * @cssproperty [--icon-size=32] - Height of icons used in the framework
+ * @cssproperty [--left-min=0] - Minimum width of the left content
+ * @cssproperty [--left-max=20%] - Maximum width of the left content
+ * @cssproperty [--right-min=0] - Minimum width of the right content
+ * @cssproperty [--right-max=50%] - Maximum width of the right content
  */
 @customElement('egw-app')
 //@ts-ignore
@@ -82,27 +87,151 @@ export class EgwFrameworkApp extends LitElement
 	@state()
 	leftCollapsed = false;
 
+	@state()
+	rightCollapsed = false;
+
+	get leftSplitter() { return <SlSplitPanel>this.shadowRoot.querySelector(".egw_fw_app__outerSplit");}
+
+	get rightSplitter() { return <SlSplitPanel>this.shadowRoot.querySelector(".egw_fw_app__innerSplit");}
+
+
+	protected readonly hasSlotController = new HasSlotController(<LitElement><unknown>this,
+		'left', 'left-header', 'left-footer',
+		'right', 'right-header', 'right-footer',
+	);
+
+	// Left is in pixels
+	private leftPanelInfo : PanelInfo = {
+		side: "left",
+		preference: "jdotssideboxwidth",
+		defaultWidth: 200,
+		hiddenWidth: 0,
+		preferenceWidth: 200
+	};
+	// Right is in percentage
+	private rightPanelInfo : PanelInfo = {
+		side: "right",
+		preference: "app_right_width",
+		defaultWidth: 50,
+		hiddenWidth: 100,
+		preferenceWidth: 50
+	};
+	private resizeTimeout : number;
+
+	connectedCallback()
+	{
+		super.connectedCallback();
+		this.egw.preference(this.leftPanelInfo.preference, this.name, true).then((width) =>
+		{
+			this.leftPanelInfo.preferenceWidth = parseInt(width ?? this.leftPanelInfo.defaultWidth);
+		});
+		this.egw.preference(this.rightPanelInfo.preference, this.name, true).then((width) =>
+		{
+			this.rightPanelInfo.preferenceWidth = parseInt(width ?? this.rightPanelInfo.defaultWidth);
+		});
+	}
+
+	public showLeft()
+	{
+		this.showSide("left");
+	}
+
+	public hideLeft()
+	{
+		this.hideSide("left");
+	}
+
+	public showRight()
+	{
+		this.showSide("right");
+	}
+
+	public hideRight()
+	{
+		this.hideSide("right");
+	}
+
+	protected showSide(side)
+	{
+		const attribute = `${side}Collapsed`;
+		this[attribute] = false;
+		this[`${side}Splitter`].position = this[`${side}PanelInfo`].preferenceWidth || this[`${side}PanelInfo`].defaultWidth;
+	}
+
+	protected hideSide(side : "left" | "right")
+	{
+		const attribute = `${side}Collapsed`;
+		this[attribute] = true;
+		this[`${side}Splitter`].position = this[`${side}PanelInfo`].hiddenWidth;
+	}
+
 	get egw()
 	{
 		return window.egw ?? this.parentElement.egw ?? null;
 	}
 
+	/**
+	 * User adjusted side slider, update preference
+	 *
+	 * @param event
+	 * @protected
+	 */
+	protected async handleSlide(event)
+	{
+		if(typeof event.target?.panelInfo != "object")
+		{
+			return;
+		}
+		// Left side is in pixels, round to 2 decimals
+		let newPosition = Math.round(event.target.panelInfo.side == "left" ? event.target.positionInPixels * 100 : event.target.position * 100) / 100;
+		let preferenceName = event.target.panelInfo.preference;
+		if(newPosition != event.target.panelInfo.preferenceWidth)
+		{
+			event.target.panelInfo.preferenceWidth = newPosition;
+			if(this.resizeTimeout)
+			{
+				window.clearTimeout(this.resizeTimeout);
+			}
+			window.setTimeout(() =>
+			{
+				this.egw.set_preference(this.name, preferenceName, newPosition);
+			}, 500);
+		}
+	}
+
 	render()
 	{
+		const hasLeftSlots = this.hasSlotController.test('left-header') || this.hasSlotController.test('left') || this.hasSlotController.test('left-footer');
+		const hasRightSlots = this.hasSlotController.test('right-header') || this.hasSlotController.test('right') || this.hasSlotController.test('right-footer');
+
 		const leftClassMap = classMap({
 			"egw_fw_app__aside": true,
 			"egw_fw_app__left": true,
-			"egw_fw_app__aside-collapsed": this.leftCollapsed
+			"egw_fw_app__aside-collapsed": this.leftCollapsed,
 		});
-		const leftWidth = this.leftCollapsed ? 0 : parseInt(this.egw.preference("jdotssideboxwidth", this.name) || 0) || 250;
-		const rightWidth = (parseInt(this.egw.preference("app_right_width", this.name) || 0) || 0);
+		const rightClassMap = classMap({
+			"egw_fw_app__aside": true,
+			"egw_fw_app__right": true,
+			"egw_fw_app__aside-collapsed": this.rightCollapsed,
+		});
+		const leftWidth = this.leftCollapsed || !hasLeftSlots ? this.leftPanelInfo.hiddenWidth :
+						  this.leftPanelInfo.preferenceWidth;
+		const rightWidth = this.rightCollapsed || !hasRightSlots ? this.rightPanelInfo.hiddenWidth :
+						   this.rightPanelInfo.preferenceWidth;
 		return html`
             <div class="egw_fw_app__header">
                 <div class="egw_fw_app__name" part="name">
+                    ${hasLeftSlots ? html`
                     <sl-icon-button name="${this.leftCollapsed ? "chevron-double-right" : "chevron-double-left"}"
                                     label="${this.egw?.lang("Hide area")}"
-                                    @click=${() => {this.leftCollapsed = !this.leftCollapsed}}
-                    ></sl-icon-button>
+                                    @click=${() =>
+                                    {
+                                        this.leftCollapsed = !this.leftCollapsed;
+                                        this.requestUpdate("leftCollapsed")
+                                    }}
+                    ></sl-icon-button>`
+                                   : nothing
+                    }
                     <h2>${this.egw?.lang(this.name) ?? this.name}</h2>
                 </div>
                 <header class="egw_fw_app__header" part="header">
@@ -110,7 +239,17 @@ export class EgwFrameworkApp extends LitElement
                 </header>
             </div>
             <main class="egw_fw_app__main" part="main" aria-label="${this.name}" tabindex="0">
-                <sl-split-panel class="egw_fw_app__outerSplit" primary="start" position-in-pixels="${leftWidth}">
+                <sl-split-panel class=${classMap({"egw_fw_app__outerSplit": true, "no-content": !hasLeftSlots})}
+                                primary="start" position-in-pixels="${leftWidth}"
+                                snap="0px 20%" snap-threshold="50"
+                                .panelInfo=${this.leftPanelInfo}
+                                @sl-reposition=${(e) => this.handleSlide(e)}
+                >
+                    <sl-icon slot="divider" name="grip-vertical" @dblclick=${() =>
+                    {
+                        this.leftCollapsed = !this.leftCollapsed;
+                        this.requestUpdate();
+                    }}></sl-icon>
                     <aside slot="start" part="left" class=${leftClassMap}>
                         <div class="egw_fw_app__aside_header header">
                             <slot name="left-header"><span class="placeholder">left-header</span></slot>
@@ -123,20 +262,29 @@ export class EgwFrameworkApp extends LitElement
                             <slot name="left-footer"><span class="placeholder">left-footer</span></slot>
                         </div>
                     </aside>
-                    <sl-split-panel slot="end" class="egw_fw_app__innerSplit" primary="start"
-                                    position-in-pixels=${rightWidth || nothing}
-                                    position=${rightWidth == 0 ? "100" : nothing}
+                    <sl-split-panel slot="end"
+                                    class=${classMap({"egw_fw_app__innerSplit": true, "no-content": !hasRightSlots})}
+                                    primary="start"
+                                    position=${rightWidth} snap="50% 80% 100%"
+                                    snap-threshold="50"
+                                    .panelInfo=${this.rightPanelInfo}
+                                    @sl-reposition=${(e) => this.handleSlide(e)}
                     >
+                        <sl-icon slot="divider" name="grip-vertical" @dblclick=${() =>
+                        {
+                            this.rightCollapsed = !this.rightCollapsed;
+                            this.requestUpdate();
+                        }}></sl-icon>
                         <header slot="start" class="egw_fw_app__header header" part="content-header">
                             <slot name="header"><span class="placeholder">header</span></slot>
                         </header>
-                        <main slot=start" class="egw_fw_app__main_content content" part="content">
+                        <main slot="start" class="egw_fw_app__main_content content" part="content">
                             <slot><span class="placeholder">main</span></slot>
                         </main>
                         <footer slot="start" class="egw_fw_app__footer footer" part="footer">
                             <slot name="footer"><span class="placeholder">main-footer</span></slot>
                         </footer>
-                        <aside slot="end" class="egw_fw_app__aside egw_fw_app__right" part="right">
+                        <aside slot="end" class=${rightClassMap} part="right">
                             <div class="egw_fw_app__aside_header header">
                                 <slot name="right-header"><span class="placeholder">right-header</span></slot>
                             </div>
@@ -153,3 +301,11 @@ export class EgwFrameworkApp extends LitElement
 		`;
 	}
 }
+
+type PanelInfo = {
+	side : "left" | "right",
+	preference : "jdotssideboxwidth" | "app_right_width",
+	hiddenWidth : number,
+	defaultWidth : number,
+	preferenceWidth : number | string
+}