adding preference option for dynamic input blocking

/inpblock is now having subcommands 'timeout' and 'dynamic'
with:

/inpblock timeout <milliseconds>

and

/inpblock dynamic <on|off>

Defaults are:

/inpblock timeout 500
/inpblock dynamic on

To get the old behavior specify:

/inpblock timeout 20
/inpblock dynamic off

The dynamic mode will block incrementally after something
should be written to the window or after a key was pressed. So pressing
a key would set the timeout to 0ms and after 10 timeouts to the next
bigger one.

Example (with dynamic mode on):

"/inpblock timeout 50"

timeout series:

10x 0ms
10x 10ms (0ms + 10 times since last keypress)
10x 30ms (10ms + 20 times since last keypress)
*x50ms until next key was pressed or

6 files changed, 62 insertions, 14 deletions

diff --git a/src/command/command.c b/src/command/command.c
index f2ceaa82..bfc05f7e 100644
--- a/src/command/command.c
+++ b/src/command/command.c
@@ -623,14 +623,20 @@ static struct cmd_t command_defs[] =
           NULL } } },
 
     { "/inpblock",
-        cmd_inpblock, parse_args, 1, 1, &cons_inpblock_setting,
-        { "/inpblock millis", "Input blocking delay.",
-        { "/inpblock millis",
+        cmd_inpblock, parse_args, 2, 2, &cons_inpblock_setting,
+        { "/inpblock [timeout|dynamic] [millis|on|off]", "Input blocking delay (dynamic or static).",
+        { "/inpblock [timeout|dynamic] [millis|on|off]",
           "----------------",
-          "Time to wait in milliseconds before reading input from the terminal buffer, defaults to 20.",
-          "Valid values are 1-1000.",
-          "A higher value will result in less CPU usage, but a noticable delay for response to input.",
-          "A lower value will result in higher CPU usage, but faster response to input.",
+          "Setting for how long to wait for input before checking for new messages or checking for state",
+          "changes like 'idle'.",
+          "timeout : Time to wait in milliseconds before reading input from the terminal buffer, defaults to 500.",
+          "        : Valid values are 1-1000.",
+          "dynamic : Either use the timeout statically or use a dynamic variant which is responsive after an input",
+          "        : and blocks longer (up to the specified 'timeout').",
+          "        : on|off",
+          "A higher value will result in less CPU usage (irrespective if dynamic is on or off), but a noticable",
+          "delay for response to input if dynamic is off.",
+          "A lower value will result in higher CPU usage, but faster response to input if dynamic is off.",
           NULL } } },
 
     { "/notify",
diff --git a/src/command/commands.c b/src/command/commands.c
index 5aae8fe5..2126800d 100644
--- a/src/command/commands.c
+++ b/src/command/commands.c
@@ -3450,13 +3450,40 @@ cmd_notify(gchar **args, struct cmd_help_t help)
 gboolean
 cmd_inpblock(gchar **args, struct cmd_help_t help)
 {
-    char *value = args[0];
+    char *subcmd = args[0];
+    char *value = args[1];
     int intval;
-    if (_strtoi(value, &intval, 1, 1000) == 0) {
-        cons_show("Input blocking set to %d milliseconds.", intval);
-        prefs_set_inpblock(intval);
-        ui_input_nonblocking(FALSE);
+    if (strcmp(subcmd, "timeout") == 0) {
+        if (value == NULL) {
+            cons_show("Usage: %s", help.usage);
+            return TRUE;
+        }
+
+        if (_strtoi(value, &intval, 1, 1000) == 0) {
+            cons_show("Input blocking set to %d milliseconds.", intval);
+            prefs_set_inpblock(intval);
+            ui_input_nonblocking(FALSE);
+        }
+
+        return TRUE;
+    }
+
+    if (strcmp(subcmd, "dynamic") == 0) {
+        if (value == NULL) {
+            cons_show("Usage: %s", help.usage);
+            return TRUE;
+        }
+
+        if (strcmp(value, "on") != 0 && strcmp(value, "off") != 0) {
+            cons_show("Dynamic must be one of 'on' or 'off'");
+            return TRUE;
+        }
+
+        return _cmd_set_boolean_preference(value, help, "Dynamic input blocking", PREF_INPBLOCK_DYNAMIC);
     }
+
+    cons_show("Usage: %s", help.usage);
+
     return TRUE;
 }
 
diff --git a/src/config/preferences.c b/src/config/preferences.c
index 6e7ab576..5b683426 100644
--- a/src/config/preferences.c
+++ b/src/config/preferences.c
@@ -531,6 +531,7 @@ _get_group(preference_t pref)
         case PREF_ROSTER_BY:
         case PREF_RESOURCE_TITLE:
         case PREF_RESOURCE_MESSAGE:
+        case PREF_INPBLOCK_DYNAMIC:
             return PREF_GROUP_UI;
         case PREF_STATES:
         case PREF_OUTTYPE:
@@ -672,6 +673,8 @@ _get_key(preference_t pref)
             return "resource.title";
         case PREF_RESOURCE_MESSAGE:
             return "resource.message";
+        case PREF_INPBLOCK_DYNAMIC:
+            return "inpblock.dynamic";
         default:
             return NULL;
     }
@@ -696,6 +699,7 @@ _get_default_boolean(preference_t pref)
         case PREF_MUC_PRIVILEGES:
         case PREF_PRESENCE:
         case PREF_WRAP:
+        case PREF_INPBLOCK_DYNAMIC:
             return TRUE;
         default:
             return FALSE;
diff --git a/src/config/preferences.h b/src/config/preferences.h
index a0ad2f84..9590eb64 100644
--- a/src/config/preferences.h
+++ b/src/config/preferences.h
@@ -100,7 +100,8 @@ typedef enum {
     PREF_OTR_WARN,
     PREF_OTR_POLICY,
     PREF_RESOURCE_TITLE,
-    PREF_RESOURCE_MESSAGE
+    PREF_RESOURCE_MESSAGE,
+    PREF_INPBLOCK_DYNAMIC
 } preference_t;
 
 typedef struct prof_alias_t {
diff --git a/src/ui/console.c b/src/ui/console.c
index d219a175..69abafef 100644
--- a/src/ui/console.c
+++ b/src/ui/console.c
@@ -1182,7 +1182,12 @@ cons_show_chat_prefs(void)
 void
 cons_inpblock_setting(void)
 {
-    cons_show("Input block (/inpblock)       : %d milliseconds", prefs_get_inpblock());
+    cons_show("Input timeout (/inpblock)     : %d milliseconds", prefs_get_inpblock());
+    if (prefs_get_boolean(PREF_INPBLOCK_DYNAMIC)) {
+        cons_show("Input dynamic (/inpblock)     : ON");
+    } else {
+        cons_show("Input dynamic (/inpblock)     : OFF");
+    }
 }
 
 void
diff --git a/src/ui/core.c b/src/ui/core.c
index 3b53b4ed..20db2010 100644
--- a/src/ui/core.c
+++ b/src/ui/core.c
@@ -206,6 +206,11 @@ ui_input_nonblocking(gboolean reset)
     static gint timeout = 0;
     static gint no_input_count = 0;
 
+    if (! prefs_get_boolean(PREF_INPBLOCK_DYNAMIC)) {
+        inp_non_block(prefs_get_inpblock());
+        return;
+    }
+
     if (reset) {
       timeout = 0;
       no_input_count = 0;