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Added virtualLines prop to control number of visible lines #137

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Merged
merged 1 commit into from
Sep 13, 2021
Merged

Added virtualLines prop to control number of visible lines #137

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1 change: 1 addition & 0 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -112,6 +112,7 @@ plugins: [
| showDoubleQuotes | normal | Whether to show doublequotes on key | boolean | true |
| virtual | normal | Whether to use virtual scrolling, usually used for big data | boolean | false |
| itemHeight | normal | The height of each item when using virtual scrolling | number | auto |
| virtualLines | normal | The number of lines to render when virtual scrolling is enabled | number | 10 |
| v-model | higher | Defines value when the tree can be selected | string, array | - |
| path | higher | Root data path | string | root |
| pathSelectable | higher | Defines whether a data path supports selection | function(path, content) | - |
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7 changes: 6 additions & 1 deletion src/components/Tree/index.vue
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Expand Up @@ -127,6 +127,11 @@ export default {
type: Function,
default: null,
},
// Number of lines to show when virtual is true
virtualLines: {
type: Number,
default: 10
}
},
data() {
return {
Expand Down Expand Up @@ -217,7 +222,7 @@ export default {
methods: {
onTreeScroll() {
if (this.virtual) {
const visibleCount = 10;
const visibleCount = this.virtualLines;
const scrollTop = (this.$refs.tree && this.$refs.tree.scrollTop) || 0;
const scrollCount = Math.floor(scrollTop / this.itemHeight);
let start =
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