Add support for multi-user decryption

* Add CLI support using the command "twrp decrypt <PASSWORD> [USER ID]"
* Add GUI support using the menu Advanced --> Decrypt User

Change-Id: Id2681bc2b1012a0571417f7a6e0b980b1b25c61c
diff --git a/gui/theme/common/watch.xml b/gui/theme/common/watch.xml
index 70ccf38..af6a643 100755
--- a/gui/theme/common/watch.xml
+++ b/gui/theme/common/watch.xml
@@ -975,6 +975,7 @@
 				<action function="set">tw_cancel_param=</action>
 				<action function="set">tw_show_exclamation=0</action>
 				<action function="set">tw_show_reboot=0</action>
+				<action function="set">tw_crypto_user_id=</action>
 				<action function="page">%tw_clear_destination%</action>
 			</action>
 		</page>
@@ -1385,8 +1386,13 @@
 			</text>
 
 			<text style="text_m_accent">
-				<condition var1="tw_has_data_media" var2="1"/>
 				<placement x="%center_x%" y="%row2_y%" placement="5"/>
+				<text>{@factory_reset5=(not including users/lockscreen)}</text>
+			</text>
+
+			<text style="text_m_accent">
+				<condition var1="tw_has_data_media" var2="1"/>
+				<placement x="%center_x%" y="%row3_y%" placement="5"/>
 				<text>{@factory_reset2=(not including internal storage)}</text>
 			</text>
 
@@ -3194,6 +3200,10 @@
 				</conditions>
 				<placement x="%col1_x_left%" y="%row6_y%"/>
 				<text>{@decrypt_data_btn=Decrypt Data}</text>
+				<action function="set">tw_crypto_user_id=0</action>
+				<action function="set">tw_crypto_password=</action>
+				<action function="set">tw_password_fail=0</action>
+				<action function="set">tw_crypto_pwtype=%tw_crypto_pwtype_0%</action>
 				<action function="page">decrypt</action>
 			</button>
 
@@ -4158,6 +4168,16 @@
 
 			<listbox style="advanced_listbox">
 				<placement x="%indent%" y="%row2_header_y%" w="%content_width%" h="%fileselector_install_height%"/>
+				<listitem name="{@decrypt_users=Decrypt Users}">
+					<conditions>
+						<condition var1="tw_is_fbe" var2="1"/>
+						<condition var1="tw_all_users_decrypted" var2="0"/>
+					</conditions>
+					<actions>
+						<action function="set">tw_crypto_user_id=</action>
+						<action function="page">decrypt_users</action>
+					</actions>
+				</listitem>
 				<listitem name="{@reload_theme_btn=Reload Theme}">
 					<action function="reload"/>
 				</listitem>
@@ -5256,10 +5276,17 @@
 			</text>
 
 			<text style="text_m_accent">
+				<condition var1="tw_is_fbe" op="!=" var2="1"/>
 				<placement x="%col1_x_left%" y="%row1_y%"/>
 				<text>{@decrypt_data_enter_pass=Enter Password:}</text>
 			</text>
 
+			<text style="text_m_accent">
+				<condition var1="tw_is_fbe" var2="1"/>
+				<placement x="%col1_x_left%" y="%row1_y%"/>
+				<text>{@decrypt_data_enter_pass_fbe=Enter Password for User [%tw_crypto_user_id%]}</text>
+			</text>
+
 			<input>
 				<placement x="%col1_x_left%" y="%row2_y%" w="%content_width%" h="%input_height%"/>
 				<text>%tw_crypto_display%</text>
@@ -5316,11 +5343,19 @@
 			</text>
 
 			<text style="text_m_accent">
+				<condition var1="tw_is_fbe" op="!=" var2="1"/>
 				<condition var1="tw_password_fail" op="!=" var2="1"/>
 				<placement x="%center_x%" y="%row5_y%" placement="5"/>
 				<text>{@decrypt_data_enter_pattern=Enter Pattern.}</text>
 			</text>
 
+			<text style="text_m_accent">
+				<condition var1="tw_is_fbe" var2="1"/>
+				<condition var1="tw_password_fail" op="!=" var2="1"/>
+				<placement x="%center_x%" y="%row5_y%" placement="5"/>
+				<text>{@decrypt_data_enter_pattern_fbe=Enter Pattern for User [%tw_crypto_user_id%]}</text>
+			</text>
+
 			<text style="text_m_fail">
 				<condition var1="tw_password_fail" var2="1"/>
 				<placement x="%center_x%" y="%row5_y%" placement="5"/>
@@ -5711,5 +5746,44 @@
 				<action function="screenshot"/>
 			</action>
 		</page>
+
+		<page name="decrypt_users">
+			<template name="page"/>
+
+			<text style="text_l">
+				<placement x="%col1_x_header%" y="%row3_header_y%"/>
+				<text>{@decrypt_users=Decrypt Users}</text>
+			</text>
+
+			<text style="text_m_accent">
+				<placement x="%center_x%" y="%row2_y%" placement="5"/>
+				<text>{@decrypt_users_selection=Select a user ID to decrypt}</text>
+			</text>
+
+			<listbox>
+				<placement x="%indent%" y="%row2_header_y%" w="%content_width%" h="%fileselector_install_height%"/>
+				<text>{@select_user=Select User}</text>
+				<icon selected="radio_true" unselected="radio_false" />
+				<data name="tw_crypto_user_id" />
+			</listbox>
+
+			<button style="main_button_half_height">
+				<placement x="%col1_x_left%" y="%row13_y%" textplacement="6"/>
+				<text>{@decrypt_users=Decrypt Users}</text>
+				<action function="set">tw_crypto_password=</action>
+				<action function="set">tw_password_fail=0</action>
+				<action function="page">decrypt</action>
+			</button>
+
+			<action>
+				<touch key="home"/>
+				<action function="page">main</action>
+			</action>
+
+			<action>
+				<touch key="back"/>
+				<action function="page">advanced</action>
+			</action>
+		</page>
 	</pages>
 </recovery>