I need "right to left" text direction to write in Persian.
Enable CTL support using (source):
Tools → Options → Language Settings → Languages
Ctrl+Shift+D or Ctrl+Right Shift - switch to right-to-left text entry
Ctrl+Shift+A or Ctrl+Left Shift - switch to left-to-right text entry.
Does this solution work?
In Libreoffice 3, in the menu of tools > Options > language settings > languages
In Enhanced language support section, you should check "Enabled for Complex text layout (CTL)" to enable the key combination for text writing directions. Without this option, your Ctrl+Shift keys won't take effect. When enabled, then you can use
Add Direction Buttons like MS-WORD
As you remember in MS WORD there were to buttons in standard menu which acted as shortcut.
Go to VIEW>TOOLBARS>CUSTOMIZE
Select the tab "TOOLBARS"
Press the button "ADD"
Select Category " Format"
From the right pane select "RIGHT TO LEFT" & "LEFT TO RIGHT"