all files / src/mixins/popup/ index.js

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
1×
1×
1×
 
1×
 
1×
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
import Vue from 'vue';
import merge from 'src/utils/merge';
import PopupManager from './popup-manager';
 
let idSeed = 1;
 
const getDOM = function(dom) {
  if (dom.nodeType === 3) {
    dom = dom.nextElementSibling || dom.nextSibling;
    getDOM(dom);
  }
  return dom;
};
 
export default {
  props: {
    /**
     * popup当前显示状态
     */
    value: {
      type: Boolean,
      default: false
    },
    /**
     * 是否显示遮罩层
     */
    overlay: {
      type: Boolean,
      default: false
    },
    /**
     * 点击遮罩层是否关闭popup
     */
    closeOnClickOverlay: {
      type: Boolean,
      default: false
    },
    zIndex: [String, Number],
    /**
     * popup滚动时是否body内容也滚动
     * 默认为不滚动
     */
    lockOnScroll: {
      type: Boolean,
      default: true
    }
  },
 
  watch: {
    value(val) {
      if (val) {
        if (this.opening) return;
        this.open();
      } else {
        if (this.closing) return;
        this.close();
      }
    }
  },
 
  beforeMount() {
    this._popupId = 'popup-' + idSeed++;
    PopupManager.register(this._popupId, this);
  },
 
  data() {
    return {
      opening: false,
      opened: false,
      closing: false,
      bodyOverflow: null
    };
  },
 
  methods: {
    /**
     * 显示popup
     */
    open(options) {
      if (this.opened) return;
 
      this.opening = true;
 
      this.$emit('input', true);
 
      const dom = getDOM(this.$el);
      const props = merge({}, this, options);
      const zIndex = props.zIndex;
 
      // 如果属性中传入了`zIndex`，则覆盖`PopupManager`中对应的`zIndex`
      if (zIndex) {
        PopupManager.zIndex = zIndex;
      }
 
      // 如果显示遮罩层
      if (this.overlay) {
        if (this.closing) {
          PopupManager.closeModal(this._popupId);
          this.closing = false;
        }
        PopupManager.openModal(this._popupId, PopupManager.nextZIndex(), dom);
 
        // 如果滚动时需要锁定
        if (this.lockOnScroll) {
          // 将原来的`bodyOverflow`存起来
          if (!this.bodyOverflow) {
            this.bodyOverflow = document.body.style.overflow;
          }
 
          document.body.style.overlay = 'hidden';
        }
      }
 
      dom.style.zIndex = PopupManager.nextZIndex();
      this.opened = true;
      this.opening = false;
    },
 
    /**
     * 关闭popup
     */
    close() {
      if (this.closing) return;
 
      this.closing = true;
 
      this.$emit('input', false);
 
      if (this.lockOnScroll) {
        setTimeout(() => {
          if (this.modal && this.bodyOverflow !== 'hidden') {
            document.body.style.overflow = this.bodyOverflow;
          }
          this.bodyOverflow = null;
        }, 200);
      }
 
      this.opened = false;
      this.doAfterClose();
    },
 
    doAfterClose() {
      this.closing = false;
      PopupManager.closeModal(this._popupId);
    }
  },
 
  beforeDestroy() {
    PopupManager.deregister(this._popupId);
    PopupManager.closeModal(this._popupId);
 
    if (this.modal && this.bodyOverflow !== null && this.bodyOverflow !== 'hidden') {
      document.body.style.overflow = this.bodyOverflow;
    }
    this.bodyOverflow = null;
  }
};