[improvement] rename packages dir to src (#3659)

src/checkbox/index.js

@@ -0,0 +1,85 @@
+import { createNamespace } from '../utils';
+import { CheckboxMixin } from '../mixins/checkbox';
+
+const [createComponent, bem] = createNamespace('checkbox');
+
+export default createComponent({
+  mixins: [CheckboxMixin({
+    bem,
+    role: 'checkbox',
+    parent: 'vanCheckbox'
+  })],
+
+  computed: {
+    checked: {
+      get() {
+        return this.parent ? this.parent.value.indexOf(this.name) !== -1 : this.value;
+      },
+
+      set(val) {
+        if (this.parent) {
+          this.setParentValue(val);
+        } else {
+          this.$emit('input', val);
+        }
+      }
+    }
+  },
+
+  watch: {
+    value(val) {
+      this.$emit('change', val);
+    }
+  },
+
+  methods: {
+    toggle() {
+      const checked = !this.checked;
+
+      // When toggle method is called multiple times at the same time,
+      // only the last call is valid.
+      // This is a hack for usage inside Cell.
+      clearTimeout(this.toggleTask);
+      this.toggleTask = setTimeout(() => {
+        this.checked = checked;
+      });
+    },
+
+    onClickIcon() {
+      if (!this.isDisabled) {
+        this.toggle();
+      }
+    },
+
+    onClickLabel() {
+      if (!this.isDisabled && !this.labelDisabled) {
+        this.toggle();
+      }
+    },
+
+    setParentValue(val) {
+      const { parent } = this;
+      const value = parent.value.slice();
+
+      if (val) {
+        if (parent.max && value.length >= parent.max) {
+          return;
+        }
+
+        /* istanbul ignore else */
+        if (value.indexOf(this.name) === -1) {
+          value.push(this.name);
+          parent.$emit('input', value);
+        }
+      } else {
+        const index = value.indexOf(this.name);
+
+        /* istanbul ignore else */
+        if (index !== -1) {
+          value.splice(index, 1);
+          parent.$emit('input', value);
+        }
+      }
+    }
+  }
+});