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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
function getPref(path) {
switch (Services.prefs.getPrefType(path)) {
case Services.prefs.PREF_BOOL:
return Services.prefs.getBoolPref(path);
case Services.prefs.PREF_INT:
return Services.prefs.getIntPref(path);
case Services.prefs.PREF_STRING:
return Services.prefs.getStringPref(path);
}
return "";
}
/*
* This provides a visual list of configuration settings given an array of
* configuration paths. To change the list one can call setPrefPaths.
*/
class ConfigurationList {
constructor(aPreferencePaths) {
this.list = document.createElement("list");
this.list.classList.add("prefList");
this.setPrefPaths(aPreferencePaths);
}
/** @return {Element} */
view() {
return this.list;
}
/**
* @return {Element[]}
*/
getPrefListItems() {
return [...this.list.children].flatMap(e =>
e.dataset.prefPath !== undefined ? [e] : []
);
}
/**
* @return {string[]}
*/
getPrefPaths() {
return [...this.getPrefListItems()].map(e => e.dataset.prefPath);
}
// setPrefPaths adds and removes list items from the list and updates
// existing elements
setPrefPaths(aPreferencePaths) {
const currentPaths = this.getPrefPaths();
// Take the difference of the two arrays of preferences. There are three
// groups of paths: those removed from the current list, those to remain
// in the current list, and those to be added.
const { kept: keptPaths, removed: removedPaths } = currentPaths.reduce(
(acc, p) => {
if (aPreferencePaths.includes(p)) {
acc.kept.push(p);
} else {
acc.removed.push(p);
}
return acc;
},
{ removed: [], kept: [] }
);
const addedPaths = aPreferencePaths.filter(p => !keptPaths.includes(p));
// Remove items
this.getPrefListItems()
.filter(e => removedPaths.includes(e.dataset.prefPath))
.forEach(e => e.remove() /* Remove from DOM*/);
const addItemForPath = path => {
const item = document.createElement("li");
item.dataset.prefPath = path;
item.appendChild(new CopyButton(() => path).element);
const pathSpan = document.createElement("span");
pathSpan.textContent = path;
pathSpan.classList.add(["pathDisplay"]);
item.appendChild(pathSpan);
const valueSpan = document.createElement("span");
valueSpan.classList.add(["valueDisplay"]);
item.appendChild(valueSpan);
this.list.appendChild(item);
};
// Add items
addedPaths.forEach(addItemForPath);
// Update all pref values
this.updatePrefValues();
}
updatePrefValues() {
for (const e of this.getPrefListItems()) {
const value = getPref(e.dataset.prefPath);
const valueSpan = e.getElementsByClassName("valueDisplay").item(0);
if ("prefPath" in e.dataset) {
valueSpan.textContent = value;
}
}
}
update() {
this.updatePrefValues();
}
}
export { ConfigurationList };