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Use async URL loading for the JSON setting definitions

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Chrome disallows synchronous URL loading, so all functions requiring
the JSON definitions for the settings over MSPv2 need to be async.
This required rewriting MSPHelper._getSetting() and all its callers
using promises.

Fixes #284
This commit is contained in:
Alberto García Hierro 2017-10-17 19:49:50 +01:00
parent 244b646bd2
commit 850632bfee
2 changed files with 101 additions and 84 deletions
Download patch file Download diff file Expand all files Collapse all files

181
js/msp/MSPHelper.js
View file

@ -2246,18 +2246,28 @@ var mspHelper = (function (gui) {
}; };
self._getSetting = function(name) { self._getSetting = function(name) {
if (!this._settings) { var promise;
var $this = this; if (this._settings) {
$.ajax({ promise = Promise.resolve(this._settings);
url: chrome.extension.getURL('/resources/settings.json'), } else {
dataType: 'json', promise = new Promise(function(resolve, reject) {
async: false, var $this = this;
success: function(data) { $.ajax({
$this._settings = data; url: chrome.runtime.getURL('/resources/settings.json'),
} dataType: 'json',
error: function(jqXHR, text, error) {
reject(error);
},
success: function(data) {
$this._settings = data;
resolve(data);
}
});
}); });
} }
return this._settings[name]; return promise.then(function (data) {
return data[name];
});
}; };
self._encodeSettingName = function(name, data) { self._encodeSettingName = function(name, data) {
@ -2268,89 +2278,94 @@ var mspHelper = (function (gui) {
}; };
self.getSetting = function(name, callback) { self.getSetting = function(name, callback) {
var setting = this._getSetting(name); var $this = this;
var data = []; return this._getSetting(name).then(function (setting) {
this._encodeSettingName(name, data); var data = [];
MSP.send_message(MSPCodes.MSPV2_SETTING, data, false, function(resp) { $this._encodeSettingName(name, data);
var value; MSP.send_message(MSPCodes.MSPV2_SETTING, data, false, function(resp) {
switch (setting.type) { var value;
case "uint8_t": switch (setting.type) {
value = resp.data.getUint8(0); case "uint8_t":
break; value = resp.data.getUint8(0);
case "int8_t": break;
value = resp.data.getInt8(0); case "int8_t":
break; value = resp.data.getInt8(0);
case "uint16_t": break;
value = resp.data.getUint16(0, true); case "uint16_t":
break; value = resp.data.getUint16(0, true);
case "int16_t": break;
value = resp.data.getInt16(0, true); case "int16_t":
break; value = resp.data.getInt16(0, true);
case "uint32_t": break;
value = resp.data.getUint32(0, true); case "uint32_t":
break; value = resp.data.getUint32(0, true);
case "float": break;
var fi32 = resp.data.getUint32(0, true); case "float":
var buf = new ArrayBuffer(4); var fi32 = resp.data.getUint32(0, true);
(new Uint32Array(buf))[0] = fi32; var buf = new ArrayBuffer(4);
value = (new Float32Array(buf))[0]; (new Uint32Array(buf))[0] = fi32;
break; value = (new Float32Array(buf))[0];
default: break;
throw "Unknown setting type " + setting.type; default:
} throw "Unknown setting type " + setting.type;
if (setting.table) { }
value = setting.table.values[value]; if (setting.table) {
} value = setting.table.values[value];
if (callback) { }
callback(value, setting); if (callback) {
} callback(value, setting);
}
});
}); });
}; };
self.encodeSetting = function(name, value) { self.encodeSetting = function(name, value) {
var setting = this._getSetting(name); var $this = this;
if (setting.table) { return this._getSetting(name).then(function (setting) {
var found = false; if (setting.table) {
for (var ii = 0; ii < setting.table.values.length; ii++) { var found = false;
if (setting.table.values[ii] == value) { for (var ii = 0; ii < setting.table.values.length; ii++) {
value = ii; if (setting.table.values[ii] == value) {
found = true; value = ii;
break; found = true;
break;
}
}
if (!found) {
throw 'Invalid value "' + value + '" for setting ' + name;
} }
} }
if (!found) { var data = [];
throw 'Invalid value "' + value + '" for setting ' + name; $this._encodeSettingName(name, data);
switch (setting.type) {
case "uint8_t":
case "int8_t":
data.push8(value);
break;
case "uint16_t":
case "int16_t":
data.push16(value);
break;
case "uint32_t":
data.push32(value);
break;
case "float":
var buf = new ArrayBuffer(4);
(new Float32Array(buf))[0] = value;
var if32 = (new Uint32Array(buf))[0];
data.push32(if32);
break;
default:
throw "Unknown setting type " + setting.type;
} }
} return data;
var data = []; });
this._encodeSettingName(name, data);
switch (setting.type) {
case "uint8_t":
case "int8_t":
data.push8(value);
break;
case "uint16_t":
case "int16_t":
data.push16(value);
break;
case "uint32_t":
data.push32(value);
break;
case "float":
var buf = new ArrayBuffer(4);
(new Float32Array(buf))[0] = value;
var if32 = (new Uint32Array(buf))[0];
data.push32(if32);
break;
default:
throw "Unknown setting type " + setting.type;
}
return data;
}; };
self.setSetting = function(name, value, callback) { self.setSetting = function(name, value, callback) {
var data = this.encodeSetting(name, value); this.encodeSetting(name, value).then(function (data) {
MSP.send_message(MSPCodes.MSPV2_SET_SETTING, data, false, callback); MSP.send_message(MSPCodes.MSPV2_SET_SETTING, data, false, callback);
});
}; };
return self; return self;

4
tabs/profiles.js
View file

@ -531,7 +531,9 @@ TABS.profiles.initialize = function (callback, scrollPosition) {
var settings = presets.settings.get(currentPreset.type); var settings = presets.settings.get(currentPreset.type);
Object.keys(settings).forEach(function(key, ii) { Object.keys(settings).forEach(function(key, ii) {
var value = settings[key]; var value = settings[key];
promises[key] = MSP.promise(MSPCodes.MSPV2_SET_SETTING, mspHelper.encodeSetting(key, value)); promises[key] = mspHelper.encodeSetting(key, value).then(function(data) {
return MSP.promise(MSPCodes.MSPV2_SET_SETTING, data);
});
}); });
} }
Promise.props(promises).then(function () { Promise.props(promises).then(function () {