Design:

Use the plain string for both config and hotkey parsing
and make use of KeyConverter, ModifierKeysConverter
to make it more rubust.

Find corresponding label (to display operation result) and callback (to do the real work) based on textbox name. In this case, they should be named as `<Feature-Name><Control-Name>`.

ShowLogsTextBox,
ShowLogsLabel,
ShowLogsCallback.

If this requirement doesn't meet, throw an exception at runtime.

Logic:

How to input keys:
1. put focus in the corresponding textbox
2. press the key combination you want to use
3. when you think it is ready, release all keys
4. the textbox shows your input

How to change keys:
1. put focus in the corresponding textbox
2. press BackSpace to clear content
3. re-input new one

How to deactivate:
1. clear content in the textbox
2. press OK button

Meaning of label color:
- Green: this combination is not occupied by other programs and register successfully
- Yellow: this combination is occupied by other programs and you have to change to another one
- Transparent without color: initial status

Signed-off-by: Syrone Wong <wong.syrone@gmail.com>

- Only use one instance of LogForm

Signed-off-by: Syrone Wong <wong.syrone@gmail.com>

* optimize LogMessageTextBox

* StringBuilder instead

- Save empty config if null ref
- only save config when clicking OK button

Signed-off-by: Syrone Wong <wong.syrone@gmail.com>

- Move to seperate model

Signed-off-by: Syrone Wong <wong.syrone@gmail.com>

* new traffic chart style
- remove invoke
- force to set AxisY.Maximum not zero
- format LogForm.cs

* avoid data race

Signed-off-by: Syrone Wong <wong.syrone@gmail.com>

- Revert bandwidthScale when throughput gets smaller
- Don't save coordinates when LogForm is minimized. Otherwise, we get negative values
- activate ConfigForm & ProxyForm & LogForm

User wants to use that server after selected it in the ConfigForm. If user deletes
the server in use, we can't find its index, then the previous logic will revert to
index 0, which is not expected behaviour.

Since we handled 'ServersListBox.SelectedIndex' in various event handlers, we can
trust it all the time.

Signed-off-by: Syrone Wong <wong.syrone@gmail.com>

Signed-off-by: Syrone Wong <wong.syrone@gmail.com>

Signed-off-by: noisyfox <timemanager.rick@gmail.com>

- add event handler for KeyDown
- drop unused code, we don't support
  table and rc4 now

Signed-off-by: Syrone Wong <wong.syrone@gmail.com>

Signed-off-by: Syrone Wong <wong.syrone@gmail.com>

- Drop redundant code.
  I should read code carefully, mbed TLS will set operation
  when invoking mbedtls_cipher_setkey(), the last param
  const mbedtls_operation_t operation is what we want.
- minor changes

Signed-off-by: Syrone Wong <wong.syrone@gmail.com>

日志相关修改

* Refine encryption

- Add AES-CTR, blowfish and camellia ciphers

aes-256-ctr
aes-192-ctr
aes-128-ctr
bf-cfb
camellia-128-cfb
camellia-192-cfb
camellia-256-cfb

- Merge the previous PolarSSL and MbedTLS
- Switch to MbedTLS's cipher layer functions
- Add workaround to set cipher operation(encrypt/decrypt)

Signed-off-by: Syrone Wong <wong.syrone@gmail.com>

* Add function to get MbedTLS cipher context size

and drop hard-coded ctx sizes

Signed-off-by: Syrone Wong <wong.syrone@gmail.com>

日志文件越来越大，原有的清空日志只是清理记录窗口中显示的日志，实际并没有真的删除。

User requested.

Signed-off-by: Syrone Wong <wong.syrone@gmail.com>

- use null conditional access in case some connections been
  cancelled unexpectedly and may cause null reference exception
- Refine error message
- use conditional operator to simplify some code

Signed-off-by: Syrone Wong <wong.syrone@gmail.com>

Signed-off-by: Syrone Wong <wong.syrone@gmail.com>

- display user-friendly server name
- clarify proxy type

Signed-off-by: Syrone Wong <wong.syrone@gmail.com>

# Conflicts:
#	shadowsocks-csharp/Controller/Service/TCPRelay.cs
#	shadowsocks-csharp/Controller/ShadowsocksController.cs
#	shadowsocks-csharp/View/MenuViewController.cs

* Drop unused variable to suppress warning in LogForm

Signed-off-by: Syrone Wong <wong.syrone@gmail.com>

* Fix IPv6 displaying

It is a little ugly, send a PR if you can find a better way.

Signed-off-by: Syrone Wong <wong.syrone@gmail.com>

Note:
- Added a configuration entry, user should add this
  by hand or reset from scratch.

Signed-off-by: Syrone Wong <wong.syrone@gmail.com>

This exception is caused by processing Invoke Action while trafficChart is already disposed.

=====
Exception reproduce frequency: RARE. Once triggered, ShadowSocks crashes.

Signed-off-by: Syrone Wong <wong.syrone@gmail.com>

* Implement the line chart on Log View window for inbound/outbound traffic per second

* Implement dynamic tray icon to indicate Inbound and Outbound

* Refine linechart

* Bugfix for dynamic icon

* Refine chart presentation

* Change the data points' type for more accurate calculation

* Tweak inbound/outbound indicator image for tray icon

"Server IP" -> "Server Addr"

Correct AvailabilityStatistics's behavior under special strategies like "LoadBalance", which may switch the server several times in a short period.