Move compoenets/FontSlider to views/Slider

src/components/views/elements/Slider.tsx

@@ -0,0 +1,120 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import * as React from 'react';
+import * as PropTypes from 'prop-types';
+import { replaceableComponent } from '../../../utils/replaceableComponent';
+
+type SliderProps = {
+        // A callback for the selected value
+        onSelectionChange: (value: number) => null;
+
+        // The current value of the slider
+        value: number;
+
+        // The range and values of the slider
+        // Currently only supports an ascending, constant interval range
+        values: number[];
+
+        // A function for formatting the the values
+        displayFunc: (value: number) => string;
+
+}
+
+export default class Slider extends React.Component<SliderProps> {
+    static propTypes = {
+
+        // A callback for the new value onclick
+        onSelectionChange: PropTypes.func,
+
+        // The current value of the slider
+        value: PropTypes.number,
+
+        // The range and values of the slider
+        // Currently only supports an ascending, constant interval range
+        values: PropTypes.arrayOf(PropTypes.number),
+
+        // A function for formatting the the values
+        displayFunc: PropTypes.func,
+
+    };
+
+    _offset(values: number[], value: number): number {
+        return (value - values[0]) / (values[values.length - 1] - values[0]) * 100;
+    }
+
+    render(): React.ReactNode {
+        const dots = this.props.values.map(v =>
+            <Dot active={v<=this.props.value}
+                 label={this.props.displayFunc(v)}
+                 onClick={() => this.props.onSelectionChange(v)}
+                 key={v}
+            />);
+
+        const offset = this._offset(this.props.values, this.props.value);
+
+        return <div className="mx_Slider">
+            <div>
+                <div className="mx_Slider_bar">
+                    <hr />
+                    <div className="mx_Slider_selection">
+                        <div className="mx_Slider_selectionDot" style={{left: "calc(-0.55rem + " + offset + "%)"}} />
+                        <hr style={{width: offset + "%"}} />
+                    </div>
+                </div>
+                <div className="mx_Slider_dotContainer">
+                    {dots}
+                </div>
+            </div>
+        </div>;
+    }
+}
+
+type DotProps = {
+    // Callback for behaviour onclick
+    onClick: () => null,
+
+    // Whether the dot should appear active
+    active: boolean,
+
+    // The label on the dot
+    label: string,
+}
+
+@replaceableComponent("views.elements.Dot")
+class Dot extends React.Component<DotProps> {
+    static propTypes = {
+        // Callback for behaviour onclick
+        onClick: PropTypes.func,
+
+        // Whether the dot should appear active
+        active: PropTypes.bool,
+
+        // The label on the dot
+        label: PropTypes.string,
+    }
+
+    render(): React.ReactNode {
+        const className = "mx_Slider_dot" + (this.props.active? " mx_Slider_dotActive": "");
+
+        return <span onClick={this.props.onClick} className="mx_Slider_dotValue">
+            <div className={className} />
+            <div>
+                {this.props.label}
+            </div>
+        </span>;
+    }
+}