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prefs: handle object type

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tophf 2015-06-10 20:15:50 +03:00
parent b5df8802a0
commit fa6b0f4477
1 changed files with 39 additions and 21 deletions
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60
storage.js
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@ -173,7 +173,7 @@ var prefs = {
"manage.onlyEnabled": false, // display only enabled styles "manage.onlyEnabled": false, // display only enabled styles
"manage.onlyEdited": false, // display only styles created locally "manage.onlyEdited": false, // display only styles created locally
"editor.options": null, // CodeMirror.defaults.* "editor.options": {}, // CodeMirror.defaults.*
"editor.lineWrapping": true, // word wrap "editor.lineWrapping": true, // word wrap
"editor.smartIndent": true, // "smart" indent "editor.smartIndent": true, // "smart" indent
"editor.indentWithTabs": false,// smart indent with tabs "editor.indentWithTabs": false,// smart indent with tabs
@ -193,39 +193,31 @@ var prefs = {
NO_DEFAULT_PREFERENCE: "No default preference for '%s'", NO_DEFAULT_PREFERENCE: "No default preference for '%s'",
UNHANDLED_DATA_TYPE: "Default '%s' is of type '%s' - what should be done with it?", UNHANDLED_DATA_TYPE: "Default '%s' is of type '%s' - what should be done with it?",
getPref: function(key, ifUndefined) { getPref: function(key, defaultValue) {
// Returns localStorage[key], ifUndefined, this[key], or undefined // Returns localStorage[key], defaultValue, this[key], or undefined
// as type of ifUndefined, this[key], or localStorage[key] // as type of defaultValue, this[key], or localStorage[key]
if (ifUndefined === undefined) ifUndefined = this[key]; // default value
var value = localStorage[key]; var value = localStorage[key];
if (undefined === value) { // no user preference if (value === undefined) {
if (ifUndefined === undefined) console.error(this.NO_DEFAULT_PREFERENCE, key); return defaultValue === undefined ? shallowCopy(this[key]) : defaultValue;
return ifUndefined;
} }
switch (typeof ifUndefined) { switch (typeof (defaultValue === undefined ? this[key] : defaultValue)) {
case "boolean": return value.toLowerCase() === "true"; case "boolean": return value.toLowerCase() === "true";
case "number": return Number(value); case "number": return Number(value);
case "object": return JSON.parse(value); case "object": return JSON.parse(value);
case "string": break; case "string": break;
case "undefined": console.warn(this.NO_DEFAULT_PREFERENCE, key); break; case "undefined": console.warn(this.NO_DEFAULT_PREFERENCE, key); break;
default: console.error(UNHANDLED_DATA_TYPE, key, typeof ifUndefined); default: console.error(UNHANDLED_DATA_TYPE, key, typeof defaultValue);
} }
return value; return value;
}, },
setPref: function(key, value) { setPref: function(key, value) {
if (!(key in this)) console.warn(this.NO_DEFAULT_PREFERENCE, key); var oldValue = localStorage[key];
var oldValue = this.getPref(key); if (value === undefined || equal(value, this[key])) {
delete localStorage[key];
if (undefined === value || this[key] === value) {
localStorage.removeItem(key); // (deleted || default)
} else { } else {
var strValue = ("string" === typeof value || localStorage[key] = typeof value == "string" ? value : JSON.stringify(value);
undefined === value) ? value : JSON.stringify(value);
localStorage.setItem(key, strValue);
} }
if (!equal(value, oldValue === undefined ? this[key] : oldValue)) {
var newValue = this.getPref(key);
if (newValue !== oldValue) {
var message = {method: "prefChanged", prefName: key, value: value}; var message = {method: "prefChanged", prefName: key, value: value};
notifyAllTabs(message); notifyAllTabs(message);
chrome.extension.sendMessage(message); chrome.extension.sendMessage(message);
@ -266,3 +258,29 @@ function sessionStorageHash(name) {
Object.defineProperty(hash, "name", {value: name}); Object.defineProperty(hash, "name", {value: name});
return hash; return hash;
} }
function shallowCopy(obj) {
if (typeof obj != "object") {
return obj;
}
var copy = {};
for (var k in obj) {
copy[k] = obj[k];
}
return copy;
}
function equal(a, b) {
if (!a || !b || typeof a != "object") {
return a === b;
}
if (Object.keys(a).length != Object.keys(b).length) {
return false;
}
for (var k in a) {
if (a[k] !== b[k]) {
return false;
}
}
return true;
}