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<script>
import { GlButtonGroup, GlButton } from '@gitlab/ui';
const SCALE_STEP_SIZE = 0.2;
const DEFAULT_SCALE = 1;
const MIN_SCALE = 1;
const MAX_SCALE = 2;
export default {
components: {
GlButtonGroup,
GlButton,
},
data() {
return {
scale: DEFAULT_SCALE,
};
},
computed: {
disableReset() {
return this.scale <= MIN_SCALE;
},
disableDecrease() {
return this.scale === DEFAULT_SCALE;
},
disableIncrease() {
return this.scale >= MAX_SCALE;
},
},
methods: {
setScale(scale) {
if (scale < MIN_SCALE) {
return;
}
this.scale = Math.round(scale * 100) / 100;
this.$emit('scale', this.scale);
},
incrementScale() {
this.setScale(this.scale + SCALE_STEP_SIZE);
},
decrementScale() {
this.setScale(this.scale - SCALE_STEP_SIZE);
},
resetScale() {
this.setScale(DEFAULT_SCALE);
},
},
};
</script>
<template>
<gl-button-group class="gl-z-index-1">
<gl-button
icon="dash"
:disabled="disableDecrease"
:aria-label="__('Decrease')"
@click="decrementScale"
/>
<gl-button icon="redo" :disabled="disableReset" :aria-label="__('Reset')" @click="resetScale" />
<gl-button
icon="plus"
:disabled="disableIncrease"
:aria-label="__('Increase')"
@click="incrementScale"
/>
</gl-button-group>
</template>
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