小程序源码

2020-09-02 08:44:41 +08:00
parent 30b54a23ff
commit 593017f562
277 changed files with 5497 additions and 0 deletions
--- a/source/wx/xzs-student/component/iView/sticky/index.js
+++ b/source/wx/xzs-student/component/iView/sticky/index.js
@@ -0,0 +1,63 @@
+Component({
+    externalClasses: ['i-class'],
+    properties : {
+        scrollTop : {
+            type : Number,
+            observer(val){
+                this._updateScrollTopChange();
+            }
+        }
+    },
+    relations : {
+        '../sticky-item/index' : {
+            type : 'child',
+            linked(){
+                this._updateDataChange();
+            },
+            linkChanged () {
+                this._updateDataChange();
+            },
+            unlinked () {
+                this._updateDataChange();
+            }
+        }
+    },
+    data : {
+        timer : null,
+        itemLength : 0,
+    },
+    methods : {
+        _updateScrollTopChange(){
+            const stickies = this.getRelationNodes('../sticky-item/index');
+            if( stickies.length > 0 ){
+                stickies.forEach((item) => {
+                    if( item ){
+                        item.updateScrollTopChange( this.data.scrollTop );
+                    }
+                })
+            }
+        },
+        _updateDataChange( ){
+            const stickies = this.getRelationNodes('../sticky-item/index');
+            if( stickies.length > 0 ){
+                if( this.data.timer ){
+                    clearTimeout( this.data.timer )
+                    this.setData({
+                        timer : null
+                    })
+                }
+                this.data.timer = setTimeout(()=>{
+                    stickies.forEach((item,index) => {
+                        if( item ){
+                            item.updateDataChange(index);
+                        }
+                    })
+                },0)
+                this.setData({
+                    timer : this.data.timer
+                })
+            }
+        }
+    }
+        
+})