feat(select): add multiple option to limel-select, replacing limel-…

…multi-select

re #203

src/components/select-multiple/select-multiple.scss

@@ -0,0 +1,22 @@
+@import '../../style/variables';
+
+@import '@lime-material-16px/form-field/mdc-form-field';
+@import '@lime-material-16px/checkbox/mdc-checkbox';
+@import "@lime-material-16px/floating-label/mdc-floating-label";
+
+.multi-select {
+    position: relative;
+
+    .multi-select-label {
+        padding-left: pxToRem(15);
+    }
+
+    .mdc-form-field {
+        display: flex;
+    }
+
+    .mdc-checkbox {
+        @include mdc-checkbox-ink-color(primary);
+        @include mdc-checkbox-container-colors(secondary, on-primary, secondary, on-primary);
+    }
+}

src/components/select-multiple/select-multiple.tsx

@@ -0,0 +1,141 @@
+import { MDCCheckbox } from '@lime-material-16px/checkbox';
+import { MDCFormField } from '@lime-material-16px/form-field';
+import {
+    Component,
+    Element,
+    Event,
+    EventEmitter,
+    Prop,
+    State,
+} from '@stencil/core';
+import { Option } from '../../interface';
+import { createRandomString } from '../../util/random-string';
+
+@Component({
+    tag: 'limel-select-multiple',
+    shadow: true,
+    styleUrl: 'select-multiple.scss',
+})
+export class SelectMultiple {
+    @Prop({ reflectToAttr: true })
+    public disabled = false;
+
+    @Prop({ reflectToAttr: true })
+    public label: string;
+
+    @Prop()
+    public value: Option[] = [];
+
+    @Prop()
+    public options: Option[] = [];
+
+    @Event()
+    private change: EventEmitter<Option[]>;
+
+    @Element()
+    private limelMultiSelect: HTMLElement;
+
+    @State()
+    private fieldId = createRandomString();
+
+    @State()
+    private mdcCheckboxes = [];
+
+    public componentDidLoad() {
+        const elements = Array.from(
+            this.limelMultiSelect.shadowRoot.querySelectorAll(
+                '.multi-select .mdc-form-field'
+            )
+        );
+
+        elements.forEach(element => {
+            const formField = new MDCFormField(element);
+            const checkbox = new MDCCheckbox(element.firstChild);
+            formField.input = checkbox;
+            this.mdcCheckboxes.push(checkbox);
+        });
+
+        this.onChange();
+    }
+
+    public render() {
+        return (
+            <div class="multi-select">
+                <label
+                    htmlFor={this.fieldId}
+                    class="multi-select-label mdc-floating-label mdc-floating-label--float-above"
+                >
+                    {this.label}
+                </label>
+                <div id={this.fieldId}>
+                    {this.options.map((option: Option, index: number) => {
+                        return this.renderCheckbox(index, option);
+                    })}
+                </div>
+            </div>
+        );
+    }
+
+    private renderCheckbox(index: number, option: Option) {
+        return (
+            <div class="mdc-form-field ">
+                <div
+                    class={`
+                        mdc-checkbox
+                        ${this.disabled ? 'mdc-checkbox--disabled' : ''}
+                    `}
+                >
+                    <input
+                        type="checkbox"
+                        class="mdc-checkbox__native-control"
+                        id={this.fieldId + '_' + index.toString()}
+                        value={option.value}
+                        checked={!!this.isOptionChecked(option)}
+                        disabled={this.disabled}
+                        onChange={this.onChange}
+                    />
+                    <div class="mdc-checkbox__background">
+                        <svg
+                            class="mdc-checkbox__checkmark"
+                            viewBox="0 0 24 24"
+                        >
+                            <path
+                                class="mdc-checkbox__checkmark-path"
+                                fill="none"
+                                d="M1.73,12.91 8.1,19.28 22.79,4.59"
+                            />
+                        </svg>
+                        <div class="mdc-checkbox__mixedmark" />
+                    </div>
+                </div>
+                <label htmlFor={this.fieldId + '_' + index.toString()}>
+                    {option.text}
+                </label>
+            </div>
+        );
+    }
+
+    private isOptionChecked(option: Option) {
+        return this.value.find(checkedOption => {
+            return checkedOption.value === option.value;
+        });
+    }
+
+    private onChange = (event?) => {
+        if (event) {
+            event.stopPropagation();
+        }
+
+        const checked = this.options.filter(option => {
+            const optionChecked = this.mdcCheckboxes.some(mdcCheckbox => {
+                return (
+                    mdcCheckbox.checked && mdcCheckbox.value === option.value
+                );
+            });
+            if (optionChecked) {
+                return option;
+            }
+        });
+        this.change.emit(checked);
+    };
+}

src/components/select-single/select-single.tsx

@@ -0,0 +1,135 @@
+import { MDCSelect } from '@lime-material-16px/select';
+import {
+    Component,
+    Element,
+    Event,
+    EventEmitter,
+    Prop,
+    State,
+    Watch,
+} from '@stencil/core';
+import { Option } from '../../interface';
+
+@Component({
+    tag: 'limel-select-single',
+    shadow: true,
+    styleUrl: 'select-single.scss',
+})
+export class SelectSingle {
+    /**
+     * Set to `true` to disable the input.
+     */
+    @Prop({ reflectToAttr: true })
+    public disabled = false;
+
+    /**
+     * The input label.
+     */
+    @Prop({ reflectToAttr: true })
+    public label: string;
+
+    /**
+     * The currently selected item.
+     */
+    @Prop()
+    public value: Option;
+
+    @Prop()
+    public options: Option[] = [];
+
+    @Event()
+    private change: EventEmitter<Option>;
+
+    @Element()
+    private limelSelect: HTMLElement;
+
+    @State()
+    private mdcSelect;
+
+    public componentDidLoad() {
+        const element = this.limelSelect.shadowRoot.querySelector(
+            '.mdc-select'
+        );
+        this.mdcSelect = new MDCSelect(element);
+        this.onChange();
+    }
+
+    public componentDidUnload() {
+        this.mdcSelect.destroy();
+    }
+
+    public render() {
+        return (
+            <div
+                class={`
+                    mdc-select
+                    ${this.disabled ? 'mdc-select--disabled' : ''}
+                `}
+            >
+                <i class="mdc-select__dropdown-icon" />
+                <select
+                    onChange={this.onChange}
+                    class="mdc-select__native-control"
+                    disabled={this.disabled}
+                >
+                    {this.options.map(option => {
+                        return (
+                            <option
+                                key={option.value}
+                                value={option.value}
+                                selected={
+                                    this.value
+                                        ? option.value === this.value.value
+                                        : option.value === ''
+                                }
+                                disabled={option.disabled}
+                            >
+                                {option.text}
+                            </option>
+                        );
+                    })}
+                </select>
+                <label
+                    class={`
+                        mdc-floating-label
+                        ${this.value ? 'mdc-floating-label--float-above' : ''}
+                    `}
+                >
+                    {this.label}
+                </label>
+                <div class="mdc-line-ripple" />
+            </div>
+        );
+    }
+
+    @Watch('options')
+    protected optionsWatcher(newOptions) {
+        if (newOptions && newOptions.length) {
+            setTimeout(() => {
+                this.mdcSelect.selectedIndex = 0;
+                this.onChange();
+            }, 0);
+        } else {
+            this.mdcSelect.value = null;
+            this.mdcSelect.selectedIndex = -1;
+            this.onChange();
+        }
+    }
+
+    private onChange = (event?) => {
+        if (event) {
+            event.stopPropagation();
+        }
+
+        const mdcValue = this.mdcSelect.value;
+        let value: Option;
+        if (mdcValue === '') {
+            value = null;
+        } else {
+            value = this.options.find(option => {
+                return mdcValue === option.value;
+            });
+        }
+        this.change.emit(value);
+    };
+}

src/components/select/select.mdx

@@ -14,6 +14,10 @@ When importing Option, see [Import Statements](/#import-statements).
 
 <limel-example name="limel-example-select" />
 
+### Select More Than One Option
+
+<limel-example name="limel-example-select-multiple" path="select" />
+
 ### Initially Empty
 
 <limel-example name="limel-example-select-initially-empty" path="select" />