checkbox-button.vue
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<template>
<label
class="el-checkbox-button"
:class="[
size ? 'el-checkbox-button--' + size : '',
{ 'is-disabled': isDisabled },
{ 'is-checked': isChecked },
{ 'is-focus': focus },
]"
role="checkbox"
:aria-checked="isChecked"
:aria-disabled="isDisabled"
>
<input
v-if="trueLabel || falseLabel"
class="el-checkbox-button__original"
type="checkbox"
:name="name"
:disabled="isDisabled"
:true-value="trueLabel"
:false-value="falseLabel"
v-model="model"
@change="handleChange"
@focus="focus = true"
@blur="focus = false">
<input
v-else
class="el-checkbox-button__original"
type="checkbox"
:name="name"
:disabled="isDisabled"
:value="label"
v-model="model"
@change="handleChange"
@focus="focus = true"
@blur="focus = false">
<span class="el-checkbox-button__inner"
v-if="$slots.default || label"
:style="isChecked ? activeStyle : null">
<slot>{{label}}</slot>
</span>
</label>
</template>
<script>
import Emitter from 'element-ui/src/mixins/emitter';
export default {
name: 'ElCheckboxButton',
mixins: [Emitter],
inject: {
elForm: {
default: ''
},
elFormItem: {
default: ''
}
},
data() {
return {
selfModel: false,
focus: false,
isLimitExceeded: false
};
},
props: {
value: {},
label: {},
disabled: Boolean,
checked: Boolean,
name: String,
trueLabel: [String, Number],
falseLabel: [String, Number]
},
computed: {
model: {
get() {
return this._checkboxGroup
? this.store : this.value !== undefined
? this.value : this.selfModel;
},
set(val) {
if (this._checkboxGroup) {
this.isLimitExceeded = false;
(this._checkboxGroup.min !== undefined &&
val.length < this._checkboxGroup.min &&
(this.isLimitExceeded = true));
(this._checkboxGroup.max !== undefined &&
val.length > this._checkboxGroup.max &&
(this.isLimitExceeded = true));
this.isLimitExceeded === false &&
this.dispatch('ElCheckboxGroup', 'input', [val]);
} else if (this.value !== undefined) {
this.$emit('input', val);
} else {
this.selfModel = val;
}
}
},
isChecked() {
if ({}.toString.call(this.model) === '[object Boolean]') {
return this.model;
} else if (Array.isArray(this.model)) {
return this.model.indexOf(this.label) > -1;
} else if (this.model !== null && this.model !== undefined) {
return this.model === this.trueLabel;
}
},
_checkboxGroup() {
let parent = this.$parent;
while (parent) {
if (parent.$options.componentName !== 'ElCheckboxGroup') {
parent = parent.$parent;
} else {
return parent;
}
}
return false;
},
store() {
return this._checkboxGroup ? this._checkboxGroup.value : this.value;
},
activeStyle() {
return {
backgroundColor: this._checkboxGroup.fill || '',
borderColor: this._checkboxGroup.fill || '',
color: this._checkboxGroup.textColor || '',
'box-shadow': '-1px 0 0 0 ' + this._checkboxGroup.fill
};
},
_elFormItemSize() {
return (this.elFormItem || {}).elFormItemSize;
},
size() {
return this._checkboxGroup.checkboxGroupSize || this._elFormItemSize || (this.$ELEMENT || {}).size;
},
isDisabled() {
return this._checkboxGroup
? this._checkboxGroup.disabled || this.disabled || (this.elForm || {}).disabled
: this.disabled || (this.elForm || {}).disabled;
}
},
methods: {
addToStore() {
if (
Array.isArray(this.model) &&
this.model.indexOf(this.label) === -1
) {
this.model.push(this.label);
} else {
this.model = this.trueLabel || true;
}
},
handleChange(ev) {
if (this.isLimitExceeded) return;
let value;
if (ev.target.checked) {
value = this.trueLabel === undefined ? true : this.trueLabel;
} else {
value = this.falseLabel === undefined ? false : this.falseLabel;
}
this.$emit('change', value, ev);
this.$nextTick(() => {
if (this._checkboxGroup) {
this.dispatch('ElCheckboxGroup', 'change', [this._checkboxGroup.value]);
}
});
}
},
created() {
this.checked && this.addToStore();
}
};
</script>