Rename and organize widget components to conform to design terminology (#132)

client/web/src/components/widgets/buttons/IconButton.vue

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+<template>
+	<button class="icon-button" :class="[`size-${String(size)}`, gapAfter && 'gap-after']">
+		<slot></slot>
+	</button>
+</template>
+
+<style lang="scss">
+.icon-button {
+	display: inline-block;
+	flex: 0 0 auto;
+	padding: 0;
+	outline: none;
+	border: none;
+	border-radius: 2px;
+	background: none;
+	vertical-align: top;
+	fill: #ddd;
+	width: 16px;
+	height: 16px;
+
+	// The `where` pseduo-class does not contribtue to specificity
+	& + :where(.icon-button) {
+		margin-left: 0;
+	}
+
+	&.gap-after + .icon-button {
+		margin-left: 8px;
+	}
+
+	&:hover {
+		background: #666;
+		color: white;
+		fill: white;
+	}
+
+	&.size-10 {
+		width: 10px;
+		height: 10px;
+	}
+
+	&.size-12 {
+		width: 12px;
+		height: 12px;
+	}
+
+	&.size-16 {
+		width: 16px;
+		height: 16px;
+	}
+
+	&.size-24 {
+		width: 24px;
+		height: 24px;
+	}
+}
+</style>
+
+<script lang="ts">
+import { defineComponent } from "vue";
+
+export default defineComponent({
+	props: {
+		size: { type: Number, required: true },
+		gapAfter: { type: Boolean, default: false },
+	},
+});
+</script>

client/web/src/components/widgets/buttons/PopoverButton.vue

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+<template>
+	<div class="popover-button">
+		<button @click="clickButton">
+			<component :is="icon" />
+		</button>
+		<Popover :direction="PopoverDirection.Bottom" ref="popover">
+			<slot></slot>
+		</Popover>
+	</div>
+</template>
+
+<style lang="scss">
+.popover-button {
+	display: inline-block;
+	position: relative;
+	width: 16px;
+	height: 24px;
+	margin: 2px 4px;
+
+	.popover {
+		left: 50%;
+	}
+
+	button {
+		width: 100%;
+		height: 100%;
+		padding: 0;
+		outline: none;
+		border: none;
+		border-radius: 2px;
+		vertical-align: top;
+		background: #111;
+		fill: #ddd;
+
+		&:hover {
+			background: #666;
+			fill: #fff;
+		}
+	}
+}
+</style>
+
+<script lang="ts">
+import { defineComponent } from "vue";
+import DropdownArrow from "../../../../assets/svg/16x24-bounds-8x16-icon/dropdown-arrow.svg";
+import VerticalEllipsis from "../../../../assets/svg/16x24-bounds-8x16-icon/vertical-ellipsis.svg";
+import Popover, { PopoverDirection } from "../overlays/Popover.vue";
+
+export enum PopoverButtonIcon {
+	"DropdownArrow" = "DropdownArrow",
+	"VerticalEllipsis" = "VerticalEllipsis",
+}
+
+export default defineComponent({
+	components: {
+		VerticalEllipsis,
+		DropdownArrow,
+		Popover,
+		PopoverDirection,
+	},
+	props: {
+		icon: { type: String, default: PopoverButtonIcon.DropdownArrow },
+	},
+	methods: {
+		clickButton() {
+			(this.$refs.popover as typeof Popover).setOpen();
+		},
+	},
+	data() {
+		return {
+			PopoverDirection,
+		};
+	},
+});
+</script>