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Checkbox selection for Tree

pull/41/head
cagataycivici 2019-08-01 23:56:05 +03:00
parent 56839ca196
commit f645b96ee8
3 changed files with 155 additions and 29 deletions
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74
src/components/tree/Tree.vue
View File

@ -3,7 +3,7 @@
<ul class="p-tree-container" role="tree">
<TreeNode v-for="node of value" :key="node.key" :node="node"
:expandedKeys="d_expandedKeys" @node-toggle="onNodeToggle" @node-click="onNodeClick"
:selectionMode="selectionMode" :selectionKeys="selectionKeys"></TreeNode>
:selectionMode="selectionMode" :selectionKeys="selectionKeys" @checkbox-change="onCheckboxChange"></TreeNode>
</ul>
</div>
</template>
@ -33,14 +33,6 @@ export default {
type: Boolean,
default: true
},
propagateSelectionDown: {
type: Boolean,
default: true
},
propagateSelectionUp: {
type: Boolean,
default: true
},
loading: {
type: Boolean,
default: false
@ -78,19 +70,20 @@ export default {
},
onNodeClick(event) {
if (this.selectionMode != null && event.node.selectable !== false) {
let _selectionKeys;
if (this.isCheckboxSelectionMode()) {
}
else {
const metaSelection = event.nodeTouched ? false : this.metaKeySelection;
_selectionKeys = metaSelection ? this.handleSelectionWithMetaKey(event) : this.handleSelectionWithoutMetaKey(event);
}
const metaSelection = event.nodeTouched ? false : this.metaKeySelection;
const _selectionKeys = metaSelection ? this.handleSelectionWithMetaKey(event) : this.handleSelectionWithoutMetaKey(event);
this.$emit('update:selectionKeys', _selectionKeys);
}
},
onCheckboxChange(event) {
this.$emit('update:selectionKeys', event.selectionKeys);
if (event.check)
this.$emit('node-select', event.node);
else
this.$emit('node-unselect', event.node);
},
handleSelectionWithMetaKey(event) {
const originalEvent = event.originalEvent;
const node = event.node;
@ -156,6 +149,46 @@ export default {
return _selectionKeys;
},
/*handleCheckboxSelection(event) {
const node = event.node;
const checked = this.isChecked(node);
let _selectionKeys = this.selectionKeys ? {...this.selectionKeys} : {};
if (checked) {
if (this.propagateSelectionDown)
this.propagateDown(node, false, _selectionKeys);
else
delete _selectionKeys[node.key];
if (this.propagateSelectionUp && this.props.onPropagateUp) {
this.props.onPropagateUp({
originalEvent: event,
check: false,
selectionKeys: selectionKeys
});
}
this.$emit('node-unselect', node);
}
else {
if (this.props.propagateSelectionDown)
this.propagateDown(this.props.node, true, selectionKeys);
else
selectionKeys[this.props.node.key] = {checked: true};
if (this.props.propagateSelectionUp && this.props.onPropagateUp) {
this.props.onPropagateUp({
originalEvent: event,
check: true,
selectionKeys: selectionKeys
});
}
this.$emit('node-select', node);
}
return _selectionKeys;
},*/
isCheckboxSelectionMode() {
return this.selectionMode === 'checkbox';
},
@ -167,7 +200,10 @@ export default {
},
isSelected(node) {
return (this.selectionMode && this.selectionKeys) ? this.selectionKeys[node.key] === true : false;
}
},
isChecked(node) {
return this.selectionKeys ? this.selectionKeys[node.key] && this.selectionKeys[node.key].checked: false;
},
},
computed: {
containerClass() {

104
src/components/tree/TreeNode.vue
View File

@ -5,13 +5,19 @@
<span class="p-tree-toggler p-unselectable-text p-link" @click="toggle">
<span :class="toggleIcon"></span>
</span>
<div class="p-checkbox p-component" v-if="checkboxMode">
<div :class="checkboxClass">
<span :class="checkboxIcon"></span>
</div>
</div>
<span :class="icon"></span>
<span class="p-treenode-label">{{node.label}}</span>
</div>
<ul class="p-treenode-children" role="group" v-if="hasChildren && expanded">
<sub-treenode v-for="childNode of node.children" :key="childNode.key" :node="childNode"
:expandedKeys="expandedKeys" @node-toggle="onChildNodeToggle" @node-click="onChildNodeClick"
:selectionMode="selectionMode" :selectionKeys="selectionKeys"></sub-treenode>
:selectionMode="selectionMode" :selectionKeys="selectionKeys"
@checkbox-change="propagateUp"></sub-treenode>
</ul>
</li>
</template>
@ -52,11 +58,17 @@ export default {
return;
}
this.$emit('node-click', {
originalEvent: event,
nodeTouched: this.nodeTouched,
node: this.node
});
if (this.isCheckboxSelectionMode()) {
this.toggleCheckbox();
}
else {
this.$emit('node-click', {
originalEvent: event,
nodeTouched: this.nodeTouched,
node: this.node
});
}
this.nodeTouched = false;
},
onChildNodeClick(event) {
@ -125,6 +137,66 @@ export default {
break;
}
},
toggleCheckbox() {
let _selectionKeys = this.selectionKeys ? {...this.selectionKeys} : {};
const _check = !this.checked;
this.propagateDown(this.node, _check, _selectionKeys);
this.$emit('checkbox-change', {
node: this.node,
check: _check,
selectionKeys: _selectionKeys
});
},
propagateDown(node, check, selectionKeys) {
if (check)
selectionKeys[node.key] = {checked: true, partialChecked: false};
else
delete selectionKeys[node.key];
if (node.children && node.children.length) {
for (let child of node.children) {
this.propagateDown(child, check, selectionKeys);
}
}
},
propagateUp(event) {
let check = event.check;
let _selectionKeys = {...event.selectionKeys};
let checkedChildCount = 0;
let childPartialSelected = false;
for(let child of this.node.children) {
if(_selectionKeys[child.key] && _selectionKeys[child.key].checked)
checkedChildCount++;
else if(_selectionKeys[child.key] && _selectionKeys[child.key].partialChecked)
childPartialSelected = true;
}
if(check && checkedChildCount === this.node.children.length) {
_selectionKeys[this.node.key] = {checked: true, partialChecked: false};
}
else {
if (!check) {
delete _selectionKeys[this.node.key];
}
if(childPartialSelected || (checkedChildCount > 0 && checkedChildCount !== this.node.children.length))
_selectionKeys[this.node.key] = {checked: false, partialChecked: true};
else
_selectionKeys[this.node.key] = {checked: false, partialChecked: false};
}
this.$emit('checkbox-change', {
node: event.node,
check: event.check,
selectionKeys: _selectionKeys
});
},
onChildCheckboxChange(event) {
this.$emit('checkbox-change', event);
},
findNextSiblingOfAncestor(nodeElement) {
let parentNodeElement = this.getParentNodeElement(nodeElement);
if (parentNodeElement) {
@ -155,6 +227,9 @@ export default {
},
focusNode(element) {
element.children[0].focus();
},
isCheckboxSelectionMode() {
return this.selectionMode === 'checkbox';
}
},
computed: {
@ -179,7 +254,7 @@ export default {
contentClass() {
return ['p-treenode-content', {
'p-treenode-selectable': this.selectable,
'p-highlight': this.selected
'p-highlight': this.checkboxMode ? this.checked : this.selected
}];
},
icon() {
@ -190,6 +265,21 @@ export default {
'pi-caret-down': this.expanded,
'pi-caret-right': !this.expanded
}];
},
checkboxClass() {
return ['p-checkbox-box', {'p-highlight': this.checked}];
},
checkboxIcon() {
return ['p-checkbox-icon p-c', {'pi pi-check': this.checked, 'pi pi-minus': this.partialChecked}];
},
checkboxMode() {
return this.selectionMode === 'checkbox' && this.node.selectable !== false;
},
checked() {
return this.selectionKeys ? this.selectionKeys[this.node.key] && this.selectionKeys[this.node.key].checked: false;
},
partialChecked() {
return this.selectionKeys ? this.selectionKeys[this.node.key] && this.selectionKeys[this.node.key].partialChecked: false;
}
}
}

6
src/views/tree/TreeSelectionDemo.vue
View File

@ -12,15 +12,15 @@
<div class="content-section implementation">
<h3>Single Selection</h3>
<Tree :value="nodes" selectionMode="single" :selectionKeys.sync="selectedKey"></Tree>
{{selectedKey}}
<h3>Multiple Selection with MetaKey</h3>
<Tree :value="nodes" selectionMode="multiple" :selectionKeys.sync="selectedKeys1"></Tree>
{{selectedKeys1}}
<h3>Multiple Selection without MetaKey</h3>
<Tree :value="nodes" selectionMode="multiple" :selectionKeys.sync="selectedKeys2" :metaKeySelection="false"></Tree>
{{selectedKeys2}}
<h3>Checkbox Selection</h3>
<Tree :value="nodes" selectionMode="checkbox" :selectionKeys.sync="selectedKeys3"></Tree>
</div>
<TreeDoc />