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react/features/mobile/picture-in-picture/components/PictureInPictureButton.ts

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+import { connect } from 'react-redux';
+
+import { IReduxState } from '../../../app/types';
+import { translate } from '../../../base/i18n/functions';
+import { IconArrowDown } from '../../../base/icons/svg';
+import AbstractButton, { IProps as AbstractButtonProps } from '../../../base/toolbox/components/AbstractButton';
+import { enterPictureInPicture } from '../actions';
+import { isPipEnabled } from '../functions';
+
+interface IProps extends AbstractButtonProps {
+
+    /**
+     * Whether Picture-in-Picture is enabled or not.
+     */
+    _enabled: boolean;
+}
+
+/**
+ * An implementation of a button for entering Picture-in-Picture mode.
+ */
+class PictureInPictureButton extends AbstractButton<IProps> {
+    override accessibilityLabel = 'toolbar.accessibilityLabel.pip';
+    override icon = IconArrowDown;
+    override label = 'toolbar.pip';
+
+    /**
+     * Handles clicking / pressing the button.
+     *
+     * @protected
+     * @returns {void}
+     */
+    override _handleClick() {
+        this.props.dispatch(enterPictureInPicture());
+    }
+
+    /**
+     * Implements React's {@link Component#render()}.
+     *
+     * @inheritdoc
+     * @returns {React$Node}
+     */
+    override render() {
+        return this.props._enabled ? super.render() : null;
+    }
+}
+
+/**
+ * Maps (parts of) the redux state to the associated props for the
+ * {@code PictureInPictureButton} component.
+ *
+ * @param {Object} state - The Redux state.
+ * @private
+ * @returns {{
+ *     _enabled: boolean
+ * }}
+ */
+function _mapStateToProps(state: IReduxState) {
+    const enabled = isPipEnabled(state);
+
+    return {
+        _enabled: enabled
+    };
+}
+
+export default translate(connect(_mapStateToProps)(PictureInPictureButton));