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

src/slider/index.js

@@ -0,0 +1,153 @@
+import { createNamespace } from '../utils';
+import { TouchMixin } from '../mixins/touch';
+import { preventDefault } from '../utils/dom/event';
+
+const [createComponent, bem] = createNamespace('slider');
+
+export default createComponent({
+  mixins: [TouchMixin],
+
+  props: {
+    min: Number,
+    value: Number,
+    disabled: Boolean,
+    vertical: Boolean,
+    activeColor: String,
+    inactiveColor: String,
+    max: {
+      type: Number,
+      default: 100
+    },
+    step: {
+      type: Number,
+      default: 1
+    },
+    barHeight: {
+      type: String,
+      default: '2px'
+    }
+  },
+
+  computed: {
+    range() {
+      return this.max - this.min;
+    }
+  },
+
+  methods: {
+    onTouchStart(event) {
+      if (this.disabled) {
+        return;
+      }
+
+      this.touchStart(event);
+      this.startValue = this.format(this.value);
+      this.dragStatus = 'start';
+    },
+
+    onTouchMove(event) {
+      if (this.disabled) {
+        return;
+      }
+
+      if (this.dragStatus === 'start') {
+        this.$emit('drag-start');
+      }
+
+      preventDefault(event, true);
+      this.touchMove(event);
+      this.dragStatus = 'draging';
+
+      const rect = this.$el.getBoundingClientRect();
+      const delta = this.vertical ? this.deltaY : this.deltaX;
+      const total = this.vertical ? rect.height : rect.width;
+      const diff = (delta / total) * this.range;
+
+      this.newValue = this.startValue + diff;
+      this.updateValue(this.newValue);
+    },
+
+    onTouchEnd() {
+      if (this.disabled) {
+        return;
+      }
+
+      if (this.dragStatus === 'draging') {
+        this.updateValue(this.newValue, true);
+        this.$emit('drag-end');
+      }
+
+      this.dragStatus = '';
+    },
+
+    onClick(event) {
+      event.stopPropagation();
+
+      if (this.disabled) return;
+
+      const rect = this.$el.getBoundingClientRect();
+      const delta = this.vertical ? event.clientY - rect.top : event.clientX - rect.left;
+      const total = this.vertical ? rect.height : rect.width;
+      const value = (delta / total) * this.range + this.min;
+
+      this.updateValue(value, true);
+    },
+
+    updateValue(value, end) {
+      value = this.format(value);
+      this.$emit('input', value);
+
+      if (end) {
+        this.$emit('change', value);
+      }
+    },
+
+    format(value) {
+      return (
+        Math.round(Math.max(this.min, Math.min(value, this.max)) / this.step) * this.step
+      );
+    }
+  },
+
+  render(h) {
+    const { vertical } = this;
+    const style = {
+      background: this.inactiveColor
+    };
+
+    const mainAxis = vertical ? 'height' : 'width';
+    const crossAxis = vertical ? 'width' : 'height';
+
+    const barStyle = {
+      [mainAxis]: `${((this.value - this.min) * 100) / this.range}%`,
+      [crossAxis]: this.barHeight,
+      background: this.activeColor
+    };
+
+    return (
+      <div
+        style={style}
+        class={bem({ disabled: this.disabled, vertical })}
+        onClick={this.onClick}
+      >
+        <div class={bem('bar')} style={barStyle}>
+          <div
+            role="slider"
+            tabindex={this.disabled ? -1 : 0}
+            aria-valuemin={this.min}
+            aria-valuenow={this.value}
+            aria-valuemax={this.max}
+            aria-orientation={this.vertical ? 'vertical' : 'horizontal'}
+            class={bem('button-wrapper')}
+            onTouchstart={this.onTouchStart}
+            onTouchmove={this.onTouchMove}
+            onTouchend={this.onTouchEnd}
+            onTouchcancel={this.onTouchEnd}
+          >
+            {this.slots('button') || <div class={bem('button')} />}
+          </div>
+        </div>
+      </div>
+    );
+  }
+});