Move notes to own file

BUGS

@@ -31,17 +31,7 @@ Bugs
   See also: http://qt-project.org/doc/qt-4.8/qwebpage.html#createWindow
   Asked here: http://stackoverflow.com/q/23498666/2085149
 
-- Shutdown is still flaky.
-
-  Some pointers:
-      https://code.google.com/p/webscraping/source/browse/webkit.py
-      Simply does setPage(None) in __del__ of webview.
-
-      http://www.tenox.net/out/wrp11-qt.py
-      does del self._window; del self._view; del self._page
-
-      http://pydoc.net/Python/grab/0.4.5/ghost.ghost/
-      does webview.close(); del self.manager; del self.page; del self.mainframe
+- Shutdown is still flaky. (see notes)
 
 - Eliding doesn't work correctly in tabs (cuts off start)
   This especially happens when there's no favicon

TODO

@@ -32,8 +32,8 @@ New big features
     https://chrome.google.com/webstore/detail/remove-google-redirects/ccenmflbeofaceccfhhggbagkblihpoh
 - Downloads
 - session handling / saving
-- multi window
-- IPC, like dwb -x
+- multi window (see notes)
+- IPC, like dwb -x (see notes)
 - Bookmarks
 - Internationalization
 - more completions (URLs, ...)
@@ -45,13 +45,7 @@ Improvements / minor features
 - Print some meaningful message (via qInstallMsgHandler) when platform plugins
   are missing, especially with xcb (on Arch: libxkbcommon-x11)
 - Reimplement tabbar to paint it by ourselves to look like dwb
-- Save cookies in Netscape format so it can be used by wget.
-    http://www.cookiecentral.com/faq/#3.5
-    https://docs.python.org/3.4/library/http.cookies.html
-    http://qt-project.org/doc/qt-4.8/qnetworkcookie.html
-    - Second column (flag): TRUE if domain starts with ., else FALSE
-    - if a cookie is a http-only cookie domain is prepended with a #HttpOnly_
-    - Python's http.cookiejar.MozillaCookieJar might help
+- Save cookies in Netscape format so it can be used by wget. (see notes)
 - Zoom with ctrl + mousewheel
 - search highlighting
 - vertical tabbar
@@ -60,17 +54,12 @@ Improvements / minor features
 - Display metavars for commands in input bar.
 - count support for special keys
 - set-as-default argument/command
-- Enable disk caching
-    QNetworkManager.setCache() and use a QNetworkDiskCache probably
+- Enable disk caching (see notes)
 - clear cookies command
 - keybind/aliases should have completion for commands/arguments
 - Hiding scrollbars
 - Ctrl+A/X to increase/decrease last number in URL
-- Add more element-selection-detection code (with options?) based on:
-      -> javascript: http://stackoverflow.com/a/2848120/2085149
-      -> microFocusChanged and check active element via:
-         frame = page.currentFrame()
-         elem = frame.findFirstElement('*:focus')
+- Add more element-selection-detection code (with options?) (see notes)
 - somehow unfocus elements (hide blinking cursor) when insert mode is left?
 - tabs: some more padding?
 - Copy link location on crash mail should not copy mailto:
@@ -79,9 +68,7 @@ Improvements / minor features
 - Multi-line statusbar or own widget for long messages?
 - :messages command to view past messages
 - Maybe the completion widget shouldn't be a QTreeView with tree models as
-  there are many hacks involved by now.
-  Perhaps using a QHBoxLayout of QTableViews and creating/destroying them based
-  on the completion would be a better idea?
+  there are many hacks involved by now (see notes).
 
 hints
 -----

notes

@@ -0,0 +1,79 @@
+Multiwindow
+===========
+
+cmdutils.register (and thus Command) gets argument scope which is global/window
+
+when scope=global, instance is searched starting with the application
+singleton.
+
+when scope=window, instance is searched starting with the window the command
+was executed in.
+
+Each window has its own CommandDispatcher, which adds the window as an
+attribute to every Command before calling the handler. The handler then uses
+this to get the starting point for instance=.
+
+
+IPC
+===
+
+We use QLocalSocket to communicate with another instance
+TODO: find out why many apps just use QLocalSocket as a control channel, and
+shared memory for data.
+Max data size might be 8k, but this is enough for commandline args.
+
+http://developer.nokia.com/community/wiki/Qt_IPC_using_QLocalSocket_%26_QLocalServer
+https://www.mail-archive.com/pyqt@riverbankcomputing.com/msg22736.html
+http://stackoverflow.com/a/8795563/2085149
+http://nullege.com/codes/show/src%40n%40i%40ninja-ide2-2.1.1%40ninja_ide%40core%40ipc.py/20/PyQt4.QtNetwork.QLocalSocket/python
+http://nullege.com/codes/show/src%40t%40a%40taurus-3.0.0%40lib%40taurus%40qt%40qtgui%40container%40taurusmainwindow.py/780/PyQt4.QtNetwork.QLocalSocket/python
+http://nullege.com/codes/show/src%40h%40e%40Heliotrope-HEAD%40purple_server.py/95/PyQt4.QtNetwork.QLocalSocket/python
+
+
+Netscape cookies
+================
+
+http://www.cookiecentral.com/faq/#3.5
+https://docs.python.org/3.4/library/http.cookies.html
+http://qt-project.org/doc/qt-4.8/qnetworkcookie.html
+- Second column (flag): TRUE if domain starts with ., else FALSE
+- if a cookie is a http-only cookie domain is prepended with a #HttpOnly_
+- Python's http.cookiejar.MozillaCookieJar might help
+
+
+
+Caching
+=======
+
+QNetworkManager.setCache() and use a QNetworkDiskCache probably
+
+
+Element selection detection
+===========================
+
+Possible options:
+- javascript: http://stackoverflow.com/a/2848120/2085149
+- microFocusChanged and check active element via:
+    frame = page.currentFrame()
+    elem = frame.findFirstElement('*:focus')
+
+
+Completion view (not QTreeView)
+===============================
+
+Perhaps using a QHBoxLayout of QTableViews and creating/destroying them based
+on the completion would be a better idea?
+
+
+Shutdown
+========
+
+Some pointers:
+  https://code.google.com/p/webscraping/source/browse/webkit.py
+  Simply does setPage(None) in __del__ of webview.
+
+  http://www.tenox.net/out/wrp11-qt.py
+  does del self._window; del self._view; del self._page
+
+  http://pydoc.net/Python/grab/0.4.5/ghost.ghost/
+  does webview.close(); del self.manager; del self.page; del self.mainframe