auto scroll to selected item

2026-05-16 16:07:33 +08:00 · 2021-02-24 01:51:47 +08:00
parent 2dd2c417d8
commit 5a24ab3f68
7 changed files with 210 additions and 15 deletions
@@ -8,7 +8,9 @@
        </f7-toolbar>
        <f7-page-content>
            <f7-block class="margin-vertical">
-                <f7-row class="padding-vertical padding-horizontal-half" v-for="(row, idx) in allColorRows" :key="idx">
+                <f7-row class="padding-vertical padding-horizontal-half"
+                        :class="{ 'row-has-selected-item': hasSelectedIcon(row) }"
+                        v-for="(row, idx) in allColorRows" :key="idx">
                    <f7-col class="text-align-center" v-for="colorInfo in row" :key="colorInfo.color">
                        <f7-icon f7="app_fill"
                                 :style="colorInfo.color | iconStyle('default', 'var(--default-icon-color)')"
@@ -65,11 +67,46 @@ export default {
            this.$emit('input', this.currentValue);
            this.$emit('update:show', false);
        },
-        onSheetOpen() {
+        onSheetOpen(event) {
            this.currentValue = this.value;
+            this.scrollToSelectedItem(event.$el);
        },
        onSheetClosed() {
            this.$emit('update:show', false);
+        },
+        hasSelectedIcon(row) {
+            if (!this.currentValue || !row || !row.length) {
+                return false;
+            }
+
+            for (let i = 0; i < row.length; i++) {
+                if (row[i].id === this.currentValue) {
+                    return true;
+                }
+            }
+
+            return false;
+        },
+        scrollToSelectedItem(parent) {
+            if (!parent || !parent.length) {
+                return;
+            }
+
+            const container = parent.find('.page-content');
+            const selectedItem = parent.find('.row.row-has-selected-item');
+
+            if (!container.length || !selectedItem.length) {
+                return;
+            }
+
+            let targetPos = selectedItem.offset().top - container.offset().top - parseInt(container.css('padding-top'), 10)
+                - (container.outerHeight() - selectedItem.outerHeight()) / 2;
+
+            if (targetPos <= 0) {
+                return;
+            }
+
+            container.scrollTop(targetPos);
        }
    }
 }
@@ -8,7 +8,9 @@
        </f7-toolbar>
        <f7-page-content>
            <f7-block class="margin-vertical">
-                <f7-row class="padding-vertical-half padding-horizontal-half" v-for="(row, idx) in allIconRows" :key="idx">
+                <f7-row class="padding-vertical-half padding-horizontal-half"
+                        :class="{ 'row-has-selected-item': hasSelectedIcon(row) }"
+                        v-for="(row, idx) in allIconRows" :key="idx">
                    <f7-col class="text-align-center" v-for="iconInfo in row" :key="iconInfo.id">
                        <f7-icon :icon="iconInfo.icon"
                                 :style="color | iconStyle('default', 'var(--default-icon-color)')"
@@ -79,11 +81,46 @@ export default {
            this.$emit('input', this.currentValue);
            this.$emit('update:show', false);
        },
-        onSheetOpen() {
+        onSheetOpen(event) {
            this.currentValue = this.value;
+            this.scrollToSelectedItem(event.$el);
        },
        onSheetClosed() {
            this.$emit('update:show', false);
+        },
+        hasSelectedIcon(row) {
+            if (!this.currentValue || !row || !row.length) {
+                return false;
+            }
+
+            for (let i = 0; i < row.length; i++) {
+                if (row[i].id === this.currentValue) {
+                    return true;
+                }
+            }
+
+            return false;
+        },
+        scrollToSelectedItem(parent) {
+            if (!parent || !parent.length) {
+                return;
+            }
+
+            const container = parent.find('.page-content');
+            const selectedItem = parent.find('.row.row-has-selected-item');
+
+            if (!container.length || !selectedItem.length) {
+                return;
+            }
+
+            let targetPos = selectedItem.offset().top - container.offset().top - parseInt(container.css('padding-top'), 10)
+                - (container.outerHeight() - selectedItem.outerHeight()) / 2;
+
+            if (targetPos <= 0) {
+                return;
+            }
+
+            container.scrollTop(targetPos);
        }
    }
 }
@@ -11,6 +11,7 @@
                <f7-list-item link="#" no-chevron
                              v-for="(item, index) in items"
                              :key="item | itemKeyValue(index, keyField, valueType)"
+                              :class="{ 'list-item-selected': isSelected(item, index) }"
                              :value="item | itemKeyValue(index, valueField, valueType)"
                              :title="item | itemFieldContent(titleField, item, titleI18n)"
                              @click="onItemClicked(item, index)">
@@ -67,8 +68,9 @@ export default {
            this.$emit('input', this.currentValue);
            this.$emit('update:show', false);
        },
-        onSheetOpen() {
+        onSheetOpen(event) {
            this.currentValue = this.value;
+            this.scrollToSelectedItem(event.$el);
        },
        onSheetClosed() {
            this.$emit('update:show', false);
@@ -83,6 +85,27 @@ export default {
                    return this.currentValue === item;
                }
            }
+        },
+        scrollToSelectedItem(parent) {
+            if (!parent || !parent.length) {
+                return;
+            }
+
+            const container = parent.find('.page-content');
+            const selectedItem = parent.find('li.list-item-selected');
+
+            if (!container.length || !selectedItem.length) {
+                return;
+            }
+
+            let targetPos = selectedItem.offset().top - container.offset().top - parseInt(container.css('padding-top'), 10)
+                - (container.outerHeight() - selectedItem.outerHeight()) / 2;
+
+            if (targetPos <= 0) {
+                return;
+            }
+
+            container.scrollTop(targetPos);
        }
    },
    filters: {
@@ -84,8 +84,9 @@ export default {
        }
    },
    methods: {
-        onSheetOpen() {
+        onSheetOpen(event) {
            this.currentValue = this.value;
+            this.scrollToSelectedItem(event.$el);
        },
        onSheetClosed() {
            this.$emit('update:show', false);
@@ -119,6 +120,27 @@ export default {
            } else {
                return this.currentValue === subItem;
            }
+        },
+        scrollToSelectedItem(parent) {
+            if (!parent || !parent.length) {
+                return;
+            }
+
+            const container = parent.find('.page-content');
+            const selectedItem = parent.find('.treeview-item .treeview-item-selected');
+
+            if (!container.length || !selectedItem.length) {
+                return;
+            }
+
+            let targetPos = selectedItem.offset().top - container.offset().top - parseInt(container.css('padding-top'), 10)
+                - (container.outerHeight() - selectedItem.outerHeight()) / 2;
+
+            if (targetPos <= 0) {
+                return;
+            }
+
+            container.scrollTop(targetPos);
        }
    }
 }
@@ -14,6 +14,7 @@
                            <f7-list-item link="#" no-chevron
                                          v-for="item in items"
                                          :key="item | itemFieldContent(primaryKeyField, item, false)"
+                                          :class="{ 'primary-list-item-selected': item === selectedPrimaryItem }"
                                          :value="item | itemFieldContent(primaryValueField, item, false)"
                                          :title="item | itemFieldContent(primaryTitleField, null, primaryTitleI18n)"
                                          :header="item | itemFieldContent(primaryHeaderField, null, primaryHeaderI18n)"
@@ -34,6 +35,7 @@
                            <f7-list-item link="#" no-chevron
                                          v-for="subItem in selectedPrimaryItem[primarySubItemsField]"
                                          :key="subItem | itemFieldContent(secondaryKeyField, subItem, false)"
+                                          :class="{ 'secondary-list-item-selected': isSecondarySelected(subItem) }"
                                          :value="subItem | itemFieldContent(secondaryValueField, subItem, false)"
                                          :title="subItem | itemFieldContent(secondaryTitleField, null, secondaryTitleI18n)"
                                          :header="subItem | itemFieldContent(secondaryHeaderField, null, secondaryHeaderI18n)"
@@ -123,9 +125,11 @@ export default {
        }
    },
    methods: {
-        onSheetOpen() {
+        onSheetOpen(event) {
            this.currentPrimaryValue = this.getPrimaryValueBySecondaryValue(this.value);
            this.currentSecondaryValue = this.value;
+            this.scrollToSelectedItem(event.$el, '.primary-list-container', 'li.primary-list-item-selected');
+            this.scrollToSelectedItem(event.$el, '.secondary-list-container', 'li.secondary-list-item-selected');
        },
        onSheetClosed() {
            this.$emit('update:show', false);
@@ -201,6 +205,27 @@ export default {
            }

            return null;
+        },
+        scrollToSelectedItem(parent, containerSelector, selectedItemSelector) {
+            if (!parent || !parent.length) {
+                return;
+            }
+
+            const container = parent.find(containerSelector);
+            const selectedItem = parent.find(selectedItemSelector);
+
+            if (!container.length || !selectedItem.length) {
+                return;
+            }
+
+            let targetPos = selectedItem.offset().top - container.offset().top - parseInt(container.css('padding-top'), 10)
+                - (container.outerHeight() - selectedItem.outerHeight()) / 2;
+
+            if (targetPos <= 0) {
+                return;
+            }
+
+            container.scrollTop(targetPos);
        }
    }
 }