feat(ui5-textarea): add "valueStateMessage" slot (#1419)

- add "valueStateMessage" slot
- rename "valueStateMessage" CSS classes from "ui5-input-valuestatemessage-success" to "ui5-valuestatemessage--success", because they should not belong to the input only and ad two dashes to show modification (by the BEM notation)
- there is code duplication at places with the code that handles the valueStateMessage in Input, 
but also differences related to the fact that the TextArea has no suggestions and has this "exceeding" (like Warning) state.

FIXES: #1401

packages/main/src/Input.js

@@ -94,11 +94,18 @@ const metadata = {
 		},
 
 		/**
-		 * The slot is used in order to display a valueStateMessage.
+		 * Defines the value state message that will be displayed as pop up under the <code>ui5-input</code>.
 		 * <br><br>
-		 * <b>Note:</b> The valueStateMessage would be displayed only if the <code>ui5-input</code> has
-		 * a valueState of type <code>Information</code>, <code>Warning</code> or <code>Error</code>.
+		 *
+		 * <b>Note:</b> If not specified, a default text (in the respective language) will be displayed.
+		 * <br>
+		 * <b>Note:</b> The <code>valueStateMessage</code> would be displayed,
+		 * when the <code>ui5-input</code> is in <code>Information</code>, <code>Warning</code> or <code>Error</code> value state.
+		 * <br>
+		 * <b>Note:</b> If the <code>ui5-input</code> has <code>suggestionItems</code>,
+		 * the <code>valueStateMessage</code> would be displayed as part of the same popover, if used on desktop, or dialog - on phone.
 		 * @type {HTMLElement[]}
+		 * @since 1.0.0-rc.6
 		 * @slot
 		 * @public
 		 */
@@ -808,21 +815,17 @@ class Input extends UI5Element {
 	get classes() {
 		return {
 			popoverValueState: {
-				"ui5-input-valuestatemessage-root": true,
-				"ui5-input-valuestatemessage-success": this.valueState === ValueState.Success,
-				"ui5-input-valuestatemessage-error": this.valueState === ValueState.Error,
-				"ui5-input-valuestatemessage-warning": this.valueState === ValueState.Warning,
-				"ui5-input-valuestatemessage-information": this.valueState === ValueState.Information,
+				"ui5-valuestatemessage-root": true,
+				"ui5-valuestatemessage--success": this.valueState === ValueState.Success,
+				"ui5-valuestatemessage--error": this.valueState === ValueState.Error,
+				"ui5-valuestatemessage--warning": this.valueState === ValueState.Warning,
+				"ui5-valuestatemessage--information": this.valueState === ValueState.Information,
 			},
 		};
 	}
 
 	get styles() {
 		return {
-			root: {
-				"min-height": "1rem",
-				"box-shadow": "none",
-			},
 			popoverHeader: {
 				"width": `${this._inputWidth}px`,
 			},

packages/main/src/InputPopover.hbs

@@ -79,11 +79,10 @@
 			skip-registry-update
 			no-padding
 			no-arrow
-			class="ui5-input-valuestatemessage-popover"
-			placement-type="Bottom" 
-			style={{styles.root}}
+			class="ui5-valuestatemessage-popover"
+			placement-type="Bottom"
 		>
-			<div slot="header" class="ui5-responsive-popover-header {{classes.popoverValueState}}" style={{styles.popoverHeader}}>
+			<div slot="header" class="ui5-responsive-popover-header {{classes.popoverValueState}}" style="{{styles.popoverHeader}}">
 				{{> valueStateMessage}}
 			</div>
 		</ui5-popover>

packages/main/src/Popover.js

@@ -331,7 +331,8 @@ class Popover extends UI5Element {
 	}
 
 	isOpenerClicked(event) {
-		return event.target === this._opener;
+		const target = event.target;
+		return target === this._opener || (target.getFocusDomRef && target.getFocusDomRef() === this._opener);
 	}
 
 	/**

packages/main/src/TextArea.hbs

@@ -21,7 +21,7 @@
 	<textarea
 		id="{{_id}}-inner"
 		class="ui5-textarea-inner"
-		placeholder="{{ placeholder }}"
+		placeholder="{{placeholder}}"
 		?disabled="{{disabled}}"
 		?readonly="{{readonly}}"
 		?required="{{required}}"

packages/main/src/TextArea.js

@@ -1,22 +1,33 @@
 import UI5Element from "@ui5/webcomponents-base/dist/UI5Element.js";
 import litRender from "@ui5/webcomponents-base/dist/renderer/LitRenderer.js";
+import ResizeHandler from "@ui5/webcomponents-base/dist/delegate/ResizeHandler.js";
 import Integer from "@ui5/webcomponents-base/dist/types/Integer.js";
 import { fetchI18nBundle, getI18nBundle } from "@ui5/webcomponents-base/dist/i18nBundle.js";
 import { getFeature } from "@ui5/webcomponents-base/dist/FeaturesRegistry.js";
 import { isIE } from "@ui5/webcomponents-base/dist/Device.js";
 import ValueState from "@ui5/webcomponents-base/dist/types/ValueState.js";
 
 import TextAreaTemplate from "./generated/templates/TextAreaTemplate.lit.js";
-import { TEXTAREA_CHARACTERS_LEFT, TEXTAREA_CHARACTERS_EXCEEDED } from "./generated/i18n/i18n-defaults.js";
+import TextAreaPopoverTemplate from "./generated/templates/TextAreaPopoverTemplate.lit.js";
+
+import {
+	VALUE_STATE_INFORMATION,
+	VALUE_STATE_ERROR,
+	VALUE_STATE_WARNING,
+	TEXTAREA_CHARACTERS_LEFT,
+	TEXTAREA_CHARACTERS_EXCEEDED,
+} from "./generated/i18n/i18n-defaults.js";
 
 // Styles
 import styles from "./generated/themes/TextArea.css.js";
+import valueStateMessageStyles from "./generated/themes/ValueStateMessage.css.js";
 
 /**
  * @public
  */
 const metadata = {
 	tag: "ui5-textarea",
+	managedSlots: true,
 	properties: /** @lends sap.ui.webcomponents.main.TextArea.prototype */ {
 		/**
 		 * Defines the value of the Web Component.
@@ -210,15 +221,49 @@ const metadata = {
 			type: Boolean,
 		},
 
+		/**
+		 * @private
+		 */
 		_mirrorText: {
 			type: Object,
 			multiple: true,
 			defaultValue: "",
 		},
+
+		/**
+		 * @private
+		 */
 		_maxHeight: {
 			type: String,
 			noAttribute: true,
 		},
+
+		/**
+		 * @private
+		 */
+		_width: {
+			type: Integer,
+		},
+	},
+	slots: /** @lends sap.ui.webcomponents.main.TextArea.prototype */ {
+
+		/**
+		 * Defines the value state message that will be displayed as pop up under the <code>ui5-textarea</code>.
+		 *
+		 * <br><br>
+		 * <b>Note:</b> If not specified, a default text (in the respective language) will be displayed.
+		 *
+		 * <br><br>
+		 * <b>Note:</b> The <code>valueStateMessage</code> would be displayed if the <code>ui5-textarea</code> has
+		 * <code>valueState</code> of type <code>Information</code>, <code>Warning</code> or <code>Error</code>.
+		 * @type {HTMLElement[]}
+		 * @since 1.0.0-rc.7
+		 * @slot
+		 * @public
+		 */
+		valueStateMessage: {
+			type: HTMLElement,
+		},
 	},
 	events: /** @lends sap.ui.webcomponents.main.TextArea.prototype */ {
 		/**
@@ -282,12 +327,31 @@ class TextArea extends UI5Element {
 		return TextAreaTemplate;
 	}
 
+	static get staticAreaTemplate() {
+		return TextAreaPopoverTemplate;
+	}
+
+	static get staticAreaStyles() {
+		return valueStateMessageStyles;
+	}
+
 	constructor() {
 		super();
 
+		this._firstRendering = true;
+		this._openValueStateMsgPopover = false;
+		this._fnOnResize = this._onResize.bind(this);
 		this.i18nBundle = getI18nBundle("@ui5/webcomponents");
 	}
 
+	onEnterDOM() {
+		ResizeHandler.register(this, this._fnOnResize);
+	}
+
+	onExitDOM() {
+		ResizeHandler.deregister(this, this._fnOnResize);
+	}
+
 	onBeforeRendering() {
 		this._exceededTextProps = this._calcExceededText();
 		this._mirrorText = this._tokenizeText(this.value);
@@ -307,6 +371,11 @@ class TextArea extends UI5Element {
 		}
 	}
 
+	onAfterRendering() {
+		this.toggleValueStateMessage(this.openValueStateMsgPopover);
+		this._firstRendering = false;
+	}
+
 	getInputDomRef() {
 		return this.getDomRef().querySelector("textarea");
 	}
@@ -321,10 +390,12 @@ class TextArea extends UI5Element {
 
 	_onfocusin() {
 		this.focused = true;
+		this._openValueStateMsgPopover = true;
 	}
 
 	_onfocusout() {
 		this.focused = false;
+		this._openValueStateMsgPopover = false;
 	}
 
 	_onchange() {
@@ -355,6 +426,35 @@ class TextArea extends UI5Element {
 		this.fireEvent("value-changed");
 	}
 
+	_onResize() {
+		if (this.displayValueStateMessage) {
+			this._width = this.offsetWidth;
+		}
+	}
+
+	toggleValueStateMessage(toggle) {
+		if (toggle) {
+			this.openPopover();
+		} else {
+			this.closePopover();
+		}
+	}
+
+	async openPopover() {
+		this.popover = await this._getPopover();
+		this.popover && this.popover.openBy(this.shadowRoot.querySelector(".ui5-textarea-inner"));
+	}
+
+	async closePopover() {
+		this.popover = await this._getPopover();
+		this.popover && this.popover.close();
+	}
+
+	async _getPopover() {
+		const staticAreaItem = await this.getStaticAreaItemDomRef();
+		return staticAreaItem.querySelector("ui5-popover");
+	}
+
 	_tokenizeText(value) {
 		const tokenizedText = value.replace(/&/gm, "&amp;").replace(/"/gm, "&quot;").replace(/"/gm, "&#39;").replace(/</gm, "&lt;")
 			.replace(/>/gm, "&gt;")
@@ -402,6 +502,16 @@ class TextArea extends UI5Element {
 		};
 	}
 
+	get classes() {
+		return {
+			valueStateMsg: {
+				"ui5-valuestatemessage--error": this.valueState === ValueState.Error,
+				"ui5-valuestatemessage--warning": this.valueState === ValueState.Warning || this.exceeding,
+				"ui5-valuestatemessage--information": this.valueState === ValueState.Information,
+			},
+		};
+	}
+
 	get styles() {
 		const lineHeight = 1.4 * 16;
 
@@ -417,6 +527,9 @@ class TextArea extends UI5Element {
 				"height": (this.showExceededText ? "calc(100% - 26px)" : "100%"),
 				"max-height": (this._maxHeight),
 			},
+			valueStateMsgPopover: {
+				"max-width": `${this._width}px`,
+			},
 		};
 	}
 
@@ -432,6 +545,44 @@ class TextArea extends UI5Element {
 		return this.valueState === "Error" ? "true" : undefined;
 	}
 
+	get openValueStateMsgPopover() {
+		return !this._firstRendering && this._openValueStateMsgPopover && this.displayValueStateMessage;
+	}
+
+	get displayValueStateMessage() {
+		return !!this.valueStateMessage.length || this.exceeding || (this.valueState !== ValueState.Success && this.valueState !== ValueState.None);
+	}
+
+	get displayDefaultValueStateMessage() {
+		if (this.valueStateMessage.length) {
+			return false;
+		}
+
+		return this.exceeding || (this.valueState !== ValueState.Success && this.valueState !== ValueState.None);
+	}
+
+	get valueStateMessageText() {
+		return this.valueStateMessage.map(x => x.cloneNode(true));
+	}
+
+	get valueStateText() {
+		if (this.valueState !== ValueState.Error && this.exceeding) {
+			return this.valueStateTextMappings()[ValueState.Warning];
+		}
+
+		return this.valueStateTextMappings()[this.valueState];
+	}
+
+	valueStateTextMappings() {
+		const i18nBundle = this.i18nBundle;
+
+		return {
+			"Information": i18nBundle.getText(VALUE_STATE_INFORMATION),
+			"Error": i18nBundle.getText(VALUE_STATE_ERROR),
+			"Warning": i18nBundle.getText(VALUE_STATE_WARNING),
+		};
+	}
+
 	static async onDefine() {
 		await fetchI18nBundle("@ui5/webcomponents");
 	}

packages/main/src/TextAreaPopover.hbs

@@ -0,0 +1,26 @@
+{{#if displayValueStateMessage}}
+	<ui5-popover
+		skip-registry-update
+		no-padding
+		no-arrow
+		_disable-initial-focus
+		class="ui5-valuestatemessage-popover"
+		style="{{styles.valueStateMsgPopover}}"
+		placement-type="Bottom"
+		horizontal-align="Left"
+	>
+		<div slot="header" class="ui5-valuestatemessage-root {{classes.valueStateMsg}}">
+			{{> valueStateMessage}}
+		</div>
+	</ui5-popover>
+{{/if}}
+
+{{#*inline "valueStateMessage"}}
+	{{#if displayDefaultValueStateMessage}}
+		{{valueStateText}}
+	{{else}}
+		{{#each valueStateMessageText}}
+			{{this}}
+		{{/each}}
+	{{/if}}
+{{/inline}}

packages/main/src/themes/ValueStateMessage.css

@@ -1,4 +1,9 @@
-.ui5-input-valuestatemessage-root {
+.ui5-valuestatemessage-popover {
+	min-height: 1rem;
+	box-shadow: none;
+}
+
+.ui5-valuestatemessage-root {
 	box-sizing: border-box;
 	display: inline-block;
 	color: var(--sapUiBaseColor);
@@ -7,20 +12,21 @@
 	padding: .3rem .625rem;
 	overflow: hidden;
 	text-overflow: ellipsis;
+	min-width: 6.25rem;
 }
 
-.ui5-input-valuestatemessage-success {
+.ui5-valuestatemessage--success {
 	background: var(--sapSuccessBackground);
 }
 
-.ui5-input-valuestatemessage-warning {
+.ui5-valuestatemessage--warning {
 	background: var(--sapWarningBackground);
 }
 
-.ui5-input-valuestatemessage-error {
+.ui5-valuestatemessage--error {
 	background: var(--sapErrorBackground);
 }
 
-.ui5-input-valuestatemessage-information {
+.ui5-valuestatemessage--information {
 	background: var(--sapInformationBackground);
 }