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Add javadoc on public things

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Small other changes, too.
This commit is contained in:
Markus Doits 2011-01-20 11:55:36 +00:00
parent be2476e0ba
commit e73794a5cc
1 changed files with 320 additions and 14 deletions
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334
src/org/thialfihar/android/apg/utils/ApgCon.java
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@ -18,11 +18,12 @@ import org.thialfihar.android.apg.IApgService;
/**
* This class can be used by other projects to simplify connecting to the
* APG-Service. Kind of wrapper of for AIDL.
*
* It is not used in this project.
*/
public class ApgCon {
public class call_async extends AsyncTask<String, Void, Void> {
private class call_async extends AsyncTask<String, Void, Void> {
@Override
protected Void doInBackground(String... arg) {
@ -86,6 +87,17 @@ public class ApgCon {
CALL_NOT_KNOWN, // apg service does not know what to do
}
/**
* Constructor
*
* <p>
* Creates a new ApgCon object and searches for the right APG version on
* initialization. If not found, errors are printed to the error log.
* </p>
*
* @param ctx
* the running context
*/
public ApgCon(Context ctx) {
Log.v(TAG, "EncryptionService created");
mContext = ctx;
@ -153,6 +165,20 @@ public class ApgCon {
return true;
}
/**
* Disconnects ApgCon from Apg
*
* <p>
* This should be called whenever all work with APG is done (e.g. everything
* you wanted to encrypt is encrypted), since connections with AIDL should
* not be upheld indefinitely.
* <p>
*
* <p>
* Also, if you destroy you end using your ApgCon-instance, this must be
* called or else the connection to APG is leaked
* </p>
*/
public void disconnect() {
Log.v(TAG, "disconnecting apgService");
if (apgService != null) {
@ -171,20 +197,66 @@ public class ApgCon {
return true;
}
/**
* Calls a function from APG's AIDL-interface
*
* <p>
* After you have set up everything with {@link #set_arg(String, String)}
* (and variants), you can call a function from the AIDL-interface. This
* will
* <ul>
* <li>start connection to the remote interface (if not already connected)</li>
* <li>call the passed function with all set up parameters synchronously</li>
* <li>set up everything to retrieve the result and/or warnings/errors</li>
* </ul>
* </p>
*
* <p>
* Note your thread will be blocked during execution - if you want to call
* the function asynchronously, see {@link #call_async(String)}.
* </p>
*
* @param function
* a remote function to call
* @return true, if call successful (= no errors), else false
*
* @see #call_async(String)
* @see #set_arg(String, String)
*/
public boolean call(String function) {
return this.call(function, args, result);
}
/**
* Calls a function from remote interface asynchronously
*
* <p>
* This does exactly the same as {@link #call(String)}, but asynchronously.
* While connection to APG and work are done in background, your thread can
* go on executing.
* <p>
*
* <p>
* To see whether the task is finished, you have to possibilities:
* <ul>
* <li>In your thread, poll {@link #is_running()}</li>
* <li>Supply a callback with {@link #set_callback(Object, String)}</li>
* </ul>
* </p>
*
* @param function
* a remote function to call
*
* @see #call(String)
* @see #is_running()
* @see #set_callback(Object, String)
*/
public void call_async(String function) {
async_running = true;
new call_async().execute(function);
}
public boolean call(String function, Bundle pArgs) {
return this.call(function, pArgs, result);
}
public boolean call(String function, Bundle pArgs, Bundle pReturn) {
private boolean call(String function, Bundle pArgs, Bundle pReturn) {
error_list.clear();
warning_list.clear();
@ -220,30 +292,106 @@ public class ApgCon {
}
/**
* Set a string argument for APG
*
* <p>
* This defines a string argument for APG's AIDL-interface.
* </p>
*
* <p>
* To know what key-value-pairs are possible (or required), take a look into
* the IApgService.aidl
* </p>
*
* <p>
* Note, that the parameters are not deleted after a call, so you have to
* reset ({@link #clear_args()}) them manually if you want to.
* </p>
*
*
* @param key
* the key
* @param val
* the value
*
* @see #clear_args()
*/
public void set_arg(String key, String val) {
args.putString(key, val);
}
/**
* Set a string-array argument for APG
*
* <p>
* If the AIDL-parameter is an {@literal ArrayList<String>}, you have to use
* this function.
* </p>
*
* <code>
* <pre>
* set_arg("a key", new String[]{ "entry 1", "entry 2" });
* </pre>
* </code>
*
* @param key
* the key
* @param vals
* the value
*
* @see #set_arg(String, String)
*/
public void set_arg(String key, String vals[]) {
ArrayList<String> list = new ArrayList<String>();
for (String val : vals) {
list.add(val);
}
set_arg(key, list);
}
public void set_arg(String key, ArrayList<String> vals) {
args.putStringArrayList(key, vals);
args.putStringArrayList(key, list);
}
/**
* Set up a boolean argument for APG
*
* @param key
* the key
* @param vals
* the value
*
* @see #set_arg(String, String)
*/
public void set_arg(String key, boolean val) {
args.putBoolean(key, val);
}
/**
* Set up a int argument for APG
*
* @param key
* the key
* @param vals
* the value
*
* @see #set_arg(String, String)
*/
public void set_arg(String key, int val) {
args.putInt(key, val);
}
/**
* Set up a int-array argument for APG
* <p>
* If the AIDL-parameter is an {@literal ArrayList<Integer>}, you have to
* use this function.
* </p>
*
* @param key
* the key
* @param vals
* the value
*
* @see #set_arg(String, String)
*/
public void set_arg(String key, int vals[]) {
ArrayList<Integer> list = new ArrayList<Integer>();
for (int val : vals) {
@ -252,14 +400,50 @@ public class ApgCon {
args.putIntegerArrayList(key, list);
}
/**
* Clears all arguments
*
* <p>
* Anything the has been set up with the various
* {@link #set_arg(String, String)} functions, is cleared.
* </p>
* <p>
* Note, that any warning, error, callback, result etc. is not cleared with
* this.
* </p>
*
* @see #reset()
*/
public void clear_args() {
args.clear();
}
/**
* Return the object associated with the key
*
* @param key
* the object's key you want to return
* @return an object at position key, or null if not set
*/
public Object get_arg(String key) {
return args.get(key);
}
/**
* Iterates through the errors
*
* <p>
* With this method, you can iterate through all errors. The errors are only
* returned once and deleted immediately afterwards, so you can only return
* each error once.
* </p>
*
* @return a human readable description of a error that happened, or null if
* no more errors
*
* @see #has_next_error()
* @see #clear_errors()
*/
public String get_next_error() {
if (error_list.size() != 0)
return error_list.remove(0);
@ -267,10 +451,32 @@ public class ApgCon {
return null;
}
/**
* Check, if there are any new errors
*
* @return true, if there are unreturned errors, false otherwise
*
* @see #get_next_error()
*/
public boolean has_next_error() {
return error_list.size() != 0;
}
/**
* Iterates through the warnings
*
* <p>
* With this method, you can iterate through all warnings. The warnings are
* only returned once and deleted immediately afterwards, so you can only
* return each warning once.
* </p>
*
* @return a human readable description of a warning that happened, or null
* if no more warnings
*
* @see #has_next_warning()
* @see #clear_warnings()
*/
public String get_next_warning() {
if (warning_list.size() != 0)
return warning_list.remove(0);
@ -278,22 +484,68 @@ public class ApgCon {
return null;
}
/**
* Check, if there are any new warnings
*
* @return true, if there are unreturned warnings, false otherwise
*
* @see #get_next_warning()
*/
public boolean has_next_warning() {
return warning_list.size() != 0;
}
/**
* Get the result
*
* <p>
* This gets your result. After doing anything with APG, you get the output
* with this function
* </p>
* <p>
* Note, that when your last remote call is unsuccessful, the result will
* still have the same value like the last successful call (or null, if no
* call was successful). To ensure you do not work with old call's results,
* either be sure to {@link #reset()} (or at least {@link #clear_result()})
* your instance before each new call or always check that
* {@link #has_next_error()} is false.
* </p>
*
* @return the result of the last {@link #call(String)} or
* {@link #call_asinc(String)}.
*
* @see #reset()
* @see #clear_result()
*/
public String get_result() {
return result.getString("RESULT");
}
/**
* Clears all unfetched errors
*
* @see #get_next_error()
* @see #has_next_error()
*/
public void clear_errors() {
error_list.clear();
}
/**
* Clears all unfetched warnings
*
* @see #get_next_warning()
* @see #has_next_warning()
*/
public void clear_warnings() {
warning_list.clear();
}
/**
* Clears the last result
*
* @see #get_result()
*/
public void clear_result() {
result.clear();
}
@ -301,14 +553,19 @@ public class ApgCon {
/**
* Set a callback object and method
*
* <p>After an async execution is finished, obj.meth() will be called. You can
* <p>
* After an async execution is finished, obj.meth() will be called. You can
* use this in order to get notified, when encrypting/decrypting of long
* data finishes and do not have to poll {@link #is_running()} in your
* thread. Note, that if the call of the method fails for whatever reason,
* you won't get notified in any way - so you still should check
* {@link #is_running()} from time to time.</p>
* {@link #is_running()} from time to time.
* </p>
*
* <p>It produces a warning fetchable with {@link #get_next_warning()} when the callback fails.</p>
* <p>
* It produces a warning fetchable with {@link #get_next_warning()} when the
* callback fails.
* </p>
*
* <pre>
* <code>
@ -366,18 +623,67 @@ public class ApgCon {
callback_method = meth;
}
/**
* Clears any callback object
*
* @see #set_callback(Object, String)
*/
public void clear_callback_object() {
callback_object = null;
}
/**
* Clears any callback method
*
* @see #set_callback(Object, String)
*/
public void clear_callback_method() {
callback_method = null;
}
/**
* Clears any callback method and object
*
* @see #set_callback(Object, String)
*/
public void clear_callback() {
clear_callback_object();
clear_callback_method();
}
/**
* Checks, whether an async execution is running
*
* <p>
* If you started something with {@link #call_async(String)}, this will
* return true if the task is still running
* </p>
*
* @return true, if an async task is still running, false otherwise
*
* @see #call_async(String)
*/
public boolean is_running() {
return async_running;
}
/**
* Completely resets your instance
*
* <p>
* This currently resets everything in this instance. Errors, warnings,
* results, callbacks, ... are removed. Any connection to the remote
* interface is upheld, though.
* </p>
*
* <p>
* Note, that when an async execution ({@link #call_async(String)}) is
* running, it's result, warnings etc. will still be evaluated (which might
* be not what you want). Also mind, that any callback you set is also
* reseted, so on finishing the async execution any defined callback will
* NOT BE TRIGGERED.
* </p>
*/
public void reset() {
clear_errors();
clear_warnings();