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class MultipleSelectFilterWidget {
constructor(neighbors, items, initial) {
this.inputs = [];
this.graph_neighbors = neighbors;
this.filter_items = items;
this.result = {};
this.dropdown_count = 0;
for(let nodeId in this.filter_items) {
const node = this.filter_items[nodeId];
this.result[node.class] = {}
}
this.make_selection(initial);
}
make_selection( initial_data ){
if(!initial_data || jQuery.isEmptyObject(initial_data))
return;
for(let item_class in initial_data) {
const selected_items = initial_data[item_class];
for( let node_id in selected_items ){
const node = this.filter_items[node_id];
const selection_data = selected_items[node_id]
if( selection_data.selected ) {
this.select(node);
this.markAndSweep(node);
this.updateResult(node);
}
if(node['multiple']){
this.make_multiple_selection(node, selection_data);
}
}
}
}
make_multiple_selection(node, selection_data){
const prepop_data = selection_data.values;
for(let k in prepop_data){
const div = this.add_item_prepopulate(node, prepop_data[k]);
this.updateObjectResult(node, div.id, prepop_data[k]);
}
}
markAndSweep(root){
for(let i in this.filter_items) {
const node = this.filter_items[i];
node['marked'] = true; //mark all nodes
}
const toCheck = [root];
while(toCheck.length > 0){
const node = toCheck.pop();
if(!node['marked']) {
continue; //already visited, just continue
}
node['marked'] = false; //mark as visited
if(node['follow'] || node == root){ //add neighbors if we want to follow this node
const neighbors = this.graph_neighbors[node.id];
for(let neighId of neighbors) {
const neighbor = this.filter_items[neighId];
toCheck.push(neighbor);
}
}
}
//now remove all nodes still marked
for(let i in this.filter_items){
const node = this.filter_items[i];
if(node['marked']){
this.disable_node(node);
}
}
}
process(node) {
if(node['selected']) {
this.markAndSweep(node);
}
else { //TODO: make this not dumb
const selected = []
//remember the currently selected, then reset everything and reselect one at a time
for(let nodeId in this.filter_items) {
node = this.filter_items[nodeId];
if(node['selected']) {
selected.push(node);
}
this.clear(node);
}
for(let node of selected) {
this.select(node);
this.markAndSweep(selected[i]);
}
}
}
select(node) {
const elem = document.getElementById(node['id']);
node['selected'] = true;
elem.classList.remove('disabled_node', 'cleared_node');
elem.classList.add('selected_node');
}
clear(node) {
const elem = document.getElementById(node['id']);
node['selected'] = false;
node['selectable'] = true;
elem.classList.add('cleared_node')
elem.classList.remove('disabled_node', 'selected_node');
}
disable_node(node) {
const elem = document.getElementById(node['id']);
node['selected'] = false;
node['selectable'] = false;
elem.classList.remove('cleared_node', 'selected_node');
elem.classList.add('disabled_node');
}
processClick(id){
const node = this.filter_items[id];
if(!node['selectable'])
return;
if(node['multiple']){
return this.processClickMultiple(node);
} else {
return this.processClickSingle(node);
}
}
processClickSingle(node){
node['selected'] = !node['selected']; //toggle on click
if(node['selected']) {
this.select(node);
} else {
this.clear(node);
}
this.process(node);
this.updateResult(node);
}
processClickMultiple(node){
this.select(node);
const div = this.add_item_prepopulate(node, false);
this.process(node);
this.updateObjectResult(node, div.id, "");
}
restrictchars(input){
if( input.validity.patternMismatch ){
input.setCustomValidity("Only alphanumeric characters (a-z, A-Z, 0-9), underscore(_), and hyphen (-) are allowed");
input.reportValidity();
}
input.value = input.value.replace(/([^A-Za-z0-9-_.])+/g, "");
this.checkunique(input);
}
checkunique(tocheck){ //TODO: use set
const val = tocheck.value;
for( let input of this.inputs ){
if( input.value == val && input != tocheck){
tocheck.setCustomValidity("All hostnames must be unique");
tocheck.reportValidity();
return;
}
}
tocheck.setCustomValidity("");
}
make_remove_button(div, node){
const button = document.createElement("BUTTON");
button.type = "button";
button.appendChild(document.createTextNode("Remove"));
button.classList.add("btn", "btn-danger");
const that = this;
button.onclick = function(){ that.remove_dropdown(div.id, node.id); }
return button;
}
make_input(div, node, prepopulate){
const input = document.createElement("INPUT");
input.type = node.form.type;
input.name = node.id + node.form.name
input.pattern = "(?=^.{1,253}$)(^([A-Za-z0-9-_]{1,62}\.)*[A-Za-z0-9-_]{1,63})";
input.title = "Only alphanumeric characters (a-z, A-Z, 0-9), underscore(_), and hyphen (-) are allowed"
input.placeholder = node.form.placeholder;
this.inputs.push(input);
const that = this;
input.onchange = function() { that.updateObjectResult(node, div.id, input.value); that.restrictchars(this); };
input.oninput = function() { that.restrictchars(this); };
if(prepopulate)
input.value = prepopulate;
return input;
}
add_item_prepopulate(node, prepopulate){
const div = document.createElement("DIV");
div.id = "dropdown_" + this.dropdown_count;
div.classList.add("dropdown_item");
this.dropdown_count++;
const label = document.createElement("H5")
label.appendChild(document.createTextNode(node['name']))
div.appendChild(label);
div.appendChild(this.make_input(div, node, prepopulate));
div.appendChild(this.make_remove_button(div, node));
document.getElementById("dropdown_wrapper").appendChild(div);
return div;
}
remove_dropdown(div_id, node_id){
const div = document.getElementById(div_id);
const node = this.filter_items[node_id]
const parent = div.parentNode;
div.parentNode.removeChild(div);
delete this.result[node.class][node.id]['values'][div.id];
//checks if we have removed last item in class
if(jQuery.isEmptyObject(this.result[node.class][node.id]['values'])){
delete this.result[node.class][node.id];
this.clear(node);
}
}
updateResult(node){
if(!node['multiple']){
this.result[node.class][node.id] = {selected: node.selected, id: node.model_id}
if(!node.selected)
delete this.result[node.class][node.id];
}
}
updateObjectResult(node, childKey, childValue){
if(!this.result[node.class][node.id])
this.result[node.class][node.id] = {selected: true, id: node.model_id, values: {}}
this.result[node.class][node.id]['values'][childKey] = childValue;
}
finish(){
document.getElementById("filter_field").value = JSON.stringify(this.result);
}
}
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