Make TerminalView agnostic of "termux.properties" files.

`TerminalView` will use the `TerminalViewClient` interface implemented by `TermuxViewClient` in termux-app to get "enforce-char-based-input" and "ctrl-space-workaround" property values. It will also not read the file every time it needs to get the property value and will get it from the in-memory cache of `TermuxSharedProperties`.

app/src/main/java/com/termux/app/TermuxViewClient.java

@@ -52,6 +52,16 @@ public final class TermuxViewClient implements TerminalViewClient {
         return mActivity.mProperties.isBackKeyTheEscapeKey();
     }
 
+    @Override
+    public boolean shouldEnforeCharBasedInput() {
+        return mActivity.mProperties.isEnforcingCharBasedInput();
+    }
+
+    @Override
+    public boolean shouldUseCtrlSpaceWorkaround() {
+        return mActivity.mProperties.isUsingCtrlSpaceWorkaround();
+    }
+
     @Override
     public void copyModeChanged(boolean copyMode) {
         // Disable drawer while copying.

app/src/main/java/com/termux/app/settings/properties/TermuxPropertyConstants.java

@@ -61,11 +61,22 @@ public final class TermuxPropertyConstants {
 
 
 
+    /** Defines the key for whether to enforce character based input to fix the issue where for some devices like Samsung, the letters might not appear until enter is pressed */
+    public static final String KEY_ENFORCE_CHAR_BASED_INPUT =  "enforce-char-based-input"; // Default: "enforce-char-based-input"
+
+
+
+
     /** Defines the key for whether to use black UI */
     public static final String KEY_USE_BLACK_UI =  "use-black-ui"; // Default: "use-black-ui"
 
 
 
+    /** Defines the key for whether to use ctrl space workaround to fix the issue where ctrl+space does not work on some ROMs */
+    public static final String KEY_USE_CTRL_SPACE_WORKAROUND =  "ctrl-space-workaround"; // Default: "ctrl-space-workaround"
+
+
+
     /** Defines the key for whether to use fullscreen */
     public static final String KEY_USE_FULLSCREEN =  "fullscreen"; // Default: "fullscreen"
 
@@ -155,8 +166,10 @@ public final class TermuxPropertyConstants {
      * */
     public static final Set<String> TERMUX_PROPERTIES_LIST = new HashSet<>(Arrays.asList(
         // boolean
+        KEY_ENFORCE_CHAR_BASED_INPUT,
         KEY_USE_BACK_KEY_AS_ESCAPE_KEY,
         KEY_USE_BLACK_UI,
+        KEY_USE_CTRL_SPACE_WORKAROUND,
         KEY_USE_FULLSCREEN,
         KEY_USE_FULLSCREEN_WORKAROUND,
         KEY_VIRTUAL_VOLUME_KEYS_DISABLED,
@@ -183,6 +196,8 @@ public final class TermuxPropertyConstants {
      * default: false
      * */
     public static final Set<String> TERMUX_DEFAULT_BOOLEAN_BEHAVIOUR_PROPERTIES_LIST = new HashSet<>(Arrays.asList(
+        KEY_ENFORCE_CHAR_BASED_INPUT,
+        KEY_USE_CTRL_SPACE_WORKAROUND,
         KEY_USE_FULLSCREEN,
         KEY_USE_FULLSCREEN_WORKAROUND,
         TermuxConstants.PROP_ALLOW_EXTERNAL_APPS

app/src/main/java/com/termux/app/settings/properties/TermuxSharedProperties.java

@@ -485,6 +485,10 @@ public class TermuxSharedProperties implements SharedPropertiesParser {
 
 
 
+    public boolean isEnforcingCharBasedInput() {
+        return (boolean) getInternalPropertyValue(TermuxPropertyConstants.KEY_ENFORCE_CHAR_BASED_INPUT, true);
+    }
+
     public boolean isBackKeyTheEscapeKey() {
         return (boolean) getInternalPropertyValue(TermuxPropertyConstants.KEY_USE_BACK_KEY_AS_ESCAPE_KEY, true);
     }
@@ -493,6 +497,10 @@ public class TermuxSharedProperties implements SharedPropertiesParser {
         return (boolean) getInternalPropertyValue(TermuxPropertyConstants.KEY_USE_BLACK_UI, true);
     }
 
+    public boolean isUsingCtrlSpaceWorkaround() {
+        return (boolean) getInternalPropertyValue(TermuxPropertyConstants.KEY_USE_CTRL_SPACE_WORKAROUND, true);
+    }
+
     public boolean isUsingFullScreen() {
         return (boolean) getInternalPropertyValue(TermuxPropertyConstants.KEY_USE_FULLSCREEN, true);
     }

terminal-view/src/main/java/com/termux/view/TerminalView.java

@@ -37,12 +37,6 @@ import com.termux.terminal.TerminalEmulator;
 import com.termux.terminal.TerminalSession;
 import com.termux.view.textselection.TextSelectionCursorController;
 
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.InputStreamReader;
-import java.nio.charset.StandardCharsets;
-import java.util.Properties;
-
 /** View displaying and interacting with a {@link TerminalSession}. */
 public final class TerminalView extends View {
 
@@ -246,9 +240,7 @@ public final class TerminalView extends View {
 
     @Override
     public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
-        Properties props = getProperties();
+        if (mClient.shouldEnforeCharBasedInput()) {
-
-        if (props.getProperty("enforce-char-based-input", "false").equals("true")) {
             // Some keyboards seems do not reset the internal state on TYPE_NULL.
             // Affects mostly Samsung stock keyboards.
             // https://github.com/termux/termux-app/issues/686
@@ -529,8 +521,6 @@ public final class TerminalView extends View {
 
     @Override
     public boolean onKeyPreIme(int keyCode, KeyEvent event) {
-        Properties props = getProperties();
-
         if (LOG_KEY_EVENTS)
             Log.i(EmulatorDebug.LOG_TAG, "onKeyPreIme(keyCode=" + keyCode + ", event=" + event + ")");
         if (keyCode == KeyEvent.KEYCODE_BACK) {
@@ -546,9 +536,9 @@ public final class TerminalView extends View {
                         return onKeyUp(keyCode, event);
                 }
             }
-        } else if (props.getProperty("ctrl-space-workaround", "false").equals("true") &&
+        } else if (mClient.shouldUseCtrlSpaceWorkaround() &&
                    keyCode == KeyEvent.KEYCODE_SPACE && event.isCtrlPressed()) {
-            /* ctrl + space does not work on some ROMs without this workaround.
+            /* ctrl+space does not work on some ROMs without this workaround.
                However, this breaks it on devices where it works out of the box. */
             return onKeyDown(keyCode, event);
         }
@@ -961,36 +951,4 @@ public final class TerminalView extends View {
         }
     }
 
-
-
-
-
-    private Properties getProperties() {
-        File propsFile;
-        Properties props = new Properties();
-        String possiblePropLocations[] = {
-            getContext().getFilesDir() + "/home/.termux/termux.properties",
-            getContext().getFilesDir() + "/home/.config/termux/termux.properties"
-        };
-
-        propsFile = new File(possiblePropLocations[0]);
-        int i = 0;
-        while (!propsFile.exists() && i < possiblePropLocations.length) {
-            propsFile = new File(possiblePropLocations[i]);
-            i += 1;
-        }
-
-        try {
-            if (propsFile.isFile() && propsFile.canRead()) {
-                try (FileInputStream in = new FileInputStream(propsFile)) {
-                    props.load(new InputStreamReader(in, StandardCharsets.UTF_8));
-                }
-            }
-        } catch (Exception e) {
-            Log.e("termux", "Error loading props", e);
-        }
-
-        return props;
-    }
-
 }

terminal-view/src/main/java/com/termux/view/TerminalViewClient.java

@@ -25,6 +25,10 @@ public interface TerminalViewClient {
 
     boolean shouldBackButtonBeMappedToEscape();
 
+    boolean shouldEnforeCharBasedInput();
+
+    boolean shouldUseCtrlSpaceWorkaround();
+
     void copyModeChanged(boolean copyMode);
 
     boolean onKeyDown(int keyCode, KeyEvent e, TerminalSession session);