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Optimize compass to use new PluginManager.

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This commit is contained in:
Bryce Curtis 2010-09-10 11:35:10 -05:00
parent a13b8fc124
commit 5c20ba57e9
1 changed files with 18 additions and 110 deletions
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128
framework/assets/js/compass.js
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@ -1,25 +1,3 @@
com.phonegap.CompassListenerProxy = function() {
this.className = "com.phonegap.CompassListener";
};
com.phonegap.CompassListenerProxy.prototype.start = function() {
return PhoneGap.exec(this.className, "start", []);
};
com.phonegap.CompassListenerProxy.prototype.stop = function() {
return PhoneGap.exec(this.className, "stop", []);
};
com.phonegap.CompassListenerProxy.prototype.getStatus = function() {
return PhoneGap.exec(this.className, "getStatus", []);
};
com.phonegap.CompassListenerProxy.prototype.getHeading = function() {
return PhoneGap.exec(this.className, "getHeading", []);
};
com.phonegap.CompassListenerProxy.prototype.setTimeout = function(timeout) {
return PhoneGap.exec(this.className, "setTimeout", [timeout]);
};
com.phonegap.CompassListenerProxy.prototype.getTimeout = function() {
return PhoneGap.exec(this.className, "getTimeout", []);
};
com.phonegap.CompassListener = new com.phonegap.CompassListenerProxy();
/**
* This class provides access to device Compass data.
@ -37,18 +15,14 @@ function Compass() {
this.timers = {};
};
Compass.STOPPED = 0;
Compass.STARTING = 1;
Compass.RUNNING = 2;
Compass.ERROR_FAILED_TO_START = 3;
Compass.ERROR_MSG = ["Not running", "Starting", "", "Failed to start"];
/**
* Asynchronously aquires the current heading.
*
* @param {Function} successCallback The function to call when the heading data is available
* @param {Function} errorCallback The function to call when there is an error getting the heading data.
* @param {PositionOptions} options The options for getting the heading data such as timeout.
* @param {Function} errorCallback The function to call when there is an error getting the heading data. (OPTIONAL)
* @param {PositionOptions} options The options for getting the heading data such as timeout. (OPTIONAL)
*/
Compass.prototype.getCurrentHeading = function(successCallback, errorCallback, options) {
@ -64,61 +38,16 @@ Compass.prototype.getCurrentHeading = function(successCallback, errorCallback, o
return;
}
// Get current compass status
var status = com.phonegap.CompassListener.getStatus();
// If running, then call successCallback
if (status == Compass.RUNNING) {
try {
var heading = com.phonegap.CompassListener.getHeading();
successCallback(heading);
} catch (e) {
console.log("Compass Error in successCallback: " + e);
}
}
// If not running, then start it
else {
com.phonegap.CompassListener.start();
// Wait until started
var timer = setInterval(function() {
var status = com.phonegap.CompassListener.getStatus();
if (status != Compass.STARTING) {
clearInterval(timer);
// If compass is running
if (status == Compass.RUNNING) {
try {
var heading = com.phonegap.CompassListener.getHeading();
successCallback(heading);
} catch (e) {
console.log("Compass Error in successCallback: " + e);
}
}
// If compass error
else {
console.log("Compass Error: "+ Compass.ERROR_MSG[status]);
try {
if (errorCallback) {
errorCallback(status);
}
} catch (e) {
console.log("Compass Error in errorCallback: " + e);
}
}
}
}, 10);
}
// Get heading
PhoneGap.execAsync(successCallback, errorCallback, "Compass", "getHeading", []);
};
/**
* Asynchronously aquires the heading repeatedly at a given interval.
*
* @param {Function} successCallback The function to call each time the heading data is available
* @param {Function} errorCallback The function to call when there is an error getting the heading data.
* @param {HeadingOptions} options The options for getting the heading data such as timeout and the frequency of the watch.
* @param {Function} errorCallback The function to call when there is an error getting the heading data. (OPTIONAL)
* @param {HeadingOptions} options The options for getting the heading data such as timeout and the frequency of the watch. (OPTIONAL)
* @return String The watch id that must be passed to #clearWatch to stop watching.
*/
Compass.prototype.watchHeading= function(successCallback, errorCallback, options) {
@ -139,41 +68,20 @@ Compass.prototype.watchHeading= function(successCallback, errorCallback, options
}
// Make sure compass timeout > frequency + 10 sec
var timeout = com.phonegap.CompassListener.getTimeout();
if (timeout < (frequency + 10000)) {
com.phonegap.CompassListener.setTimeout(frequency + 10000); // set to frequency + 10 sec
}
PhoneGap.execAsync(
function(timeout) {
if (timeout < (frequency + 10000)) {
PhoneGap.execAsync(null, null, "Compass", "setTimeout", [frequency + 10000]);
}
},
function(e) { }, "Compass", "getTimeout", []);
// Start watch timer to get headings
var id = PhoneGap.createUUID();
com.phonegap.CompassListener.start();
// Start watch timer
navigator.compass.timers[id] = setInterval(function() {
var status = com.phonegap.CompassListener.getStatus();
// If compass is running
if (status == Compass.RUNNING) {
try {
var heading = com.phonegap.CompassListener.getHeading();
successCallback(heading);
} catch (e) {
console.log("Compass Error in successCallback: " + e);
}
}
// If compass had error
else if (status != Compass.STARTING) {
console.log("Compass Error: "+ Compass.ERROR_MSG[status]);
try {
navigator.compass.clearWatch(id);
if (errorCallback) {
errorCallback(status);
}
} catch (e) {
console.log("Compass Error in errorCallback: " + e);
}
}
}, (frequency ? frequency : 1));
navigator.compass.timers[id] = setInterval(
function() {
PhoneGap.execAsync(successCallback, errorCallback, "Compass", "getHeading", []);
}, (frequency ? frequency : 1));
return id;
};