Added: Add TextIOActivity and TextIOInfo

The `TextIOActivity` can be used to edit or view text based on various config options defined by `TextIOInfo`
and supports `monospace` font and horizontal scrolling for editing scripts, etc.

Current max text limit is `95KB`, which can be increased in future.

termux-shared/src/main/java/com/termux/shared/models/TextIOInfo.java

@@ -0,0 +1,234 @@
+package com.termux.shared.models;
+
+import android.graphics.Color;
+import android.graphics.Typeface;
+
+import androidx.annotation.NonNull;
+
+import com.termux.shared.activities.TextIOActivity;
+import com.termux.shared.data.DataUtils;
+
+import java.io.Serializable;
+
+/**
+ * An object that stored info for {@link TextIOActivity}.
+ * Max text limit is 95KB to prevent TransactionTooLargeException as per
+ * {@link DataUtils#TRANSACTION_SIZE_LIMIT_IN_BYTES}. Larger size can be supported for in-app
+ * transactions by storing {@link TextIOInfo} as a serialized object in a file like
+ * {@link com.termux.shared.activities.ReportActivity} does.
+ */
+public class TextIOInfo implements Serializable {
+
+    public static final int GENERAL_DATA_SIZE_LIMIT_IN_BYTES = 1000;
+    public static final int LABEL_SIZE_LIMIT_IN_BYTES = 4000;
+    public static final int TEXT_SIZE_LIMIT_IN_BYTES = 100000 - GENERAL_DATA_SIZE_LIMIT_IN_BYTES - LABEL_SIZE_LIMIT_IN_BYTES; // < 100KB
+
+    /** The action for which {@link TextIOActivity} will be started. */
+    private final String mAction;
+    /** The internal app component that is will start the {@link TextIOActivity}. */
+    private final String mSender;
+
+    /** The activity title. */
+    private String mTitle;
+
+    /** If back button should be shown in {@link android.app.ActionBar}. */
+    private boolean mShowBackButtonInActionBar = false;
+
+
+    /** If label is enabled. */
+    private boolean mLabelEnabled = false;
+    /**
+     * The label of text input set in {@link android.widget.TextView} that can be updated by user.
+     * Max allowed length is {@link #LABEL_SIZE_LIMIT_IN_BYTES}.
+     */
+    private String mLabel;
+    /** The text size of label. Defaults to 14sp. */
+    private int mLabelSize = 14;
+    /** The text color of label. Defaults to {@link Color#BLACK}. */
+    private int mLabelColor = Color.BLACK;
+    /** The {@link Typeface} family  of label. Defaults to "sans-serif". */
+    private String mLabelTypeFaceFamily = "sans-serif";
+    /** The {@link Typeface} style  of label. Defaults to {@link Typeface#BOLD}. */
+    private int mLabelTypeFaceStyle = Typeface.BOLD;
+
+
+    /**
+     * The text of text input set in {@link android.widget.EditText} that can be updated by user.
+     * Max allowed length is {@link #TEXT_SIZE_LIMIT_IN_BYTES}.
+     */
+    private String mText;
+    /** The text size for text. Defaults to 12sp. */
+    private int mTextSize = 12;
+    /** The text size for text. Defaults to {@link #TEXT_SIZE_LIMIT_IN_BYTES}. */
+    private int mTextLengthLimit = TEXT_SIZE_LIMIT_IN_BYTES;
+    /** The text color of text. Defaults to {@link Color#BLACK}. */
+    private int mTextColor = Color.BLACK;
+    /** The {@link Typeface} family for text. Defaults to "sans-serif". */
+    private String mTextTypeFaceFamily = "sans-serif";
+    /** The {@link Typeface} style for text. Defaults to {@link Typeface#NORMAL}. */
+    private int mTextTypeFaceStyle = Typeface.NORMAL;
+    /** If horizontal scrolling should be enabled for text. */
+    private boolean mTextHorizontallyScrolling = false;
+    /** If character usage should be enabled for text. */
+    private boolean mShowTextCharacterUsage = false;
+    /** If editing text should be disabled so that text acts like its in a {@link android.widget.TextView}. */
+    private boolean mEditingTextDisabled = false;
+
+
+    public TextIOInfo(@NonNull String action, @NonNull String sender) {
+        mAction = action;
+        mSender = sender;
+    }
+
+
+    public String getAction() {
+        return mAction;
+    }
+
+    public String getSender() {
+        return mSender;
+    }
+
+
+    public String getTitle() {
+        return mTitle;
+    }
+
+    public void setTitle(String title) {
+        mTitle = title;
+    }
+
+    public boolean shouldShowBackButtonInActionBar() {
+        return mShowBackButtonInActionBar;
+    }
+
+    public void setShowBackButtonInActionBar(boolean showBackButtonInActionBar) {
+        mShowBackButtonInActionBar = showBackButtonInActionBar;
+    }
+
+
+    public boolean isLabelEnabled() {
+        return mLabelEnabled;
+    }
+
+    public void setLabelEnabled(boolean labelEnabled) {
+        mLabelEnabled = labelEnabled;
+    }
+
+    public String getLabel() {
+        return mLabel;
+    }
+
+    public void setLabel(String label) {
+        mLabel = DataUtils.getTruncatedCommandOutput(label, LABEL_SIZE_LIMIT_IN_BYTES, true, false, false);
+    }
+
+    public int getLabelSize() {
+        return mLabelSize;
+    }
+
+    public void setLabelSize(int labelSize) {
+        if (labelSize > 0)
+            mLabelSize = labelSize;
+    }
+
+    public int getLabelColor() {
+        return mLabelColor;
+    }
+
+    public void setLabelColor(int labelColor) {
+        mLabelColor = labelColor;
+    }
+
+    public String getLabelTypeFaceFamily() {
+        return mLabelTypeFaceFamily;
+    }
+
+    public void setLabelTypeFaceFamily(String labelTypeFaceFamily) {
+        mLabelTypeFaceFamily = labelTypeFaceFamily;
+    }
+
+    public int getLabelTypeFaceStyle() {
+        return mLabelTypeFaceStyle;
+    }
+
+    public void setLabelTypeFaceStyle(int labelTypeFaceStyle) {
+        mLabelTypeFaceStyle = labelTypeFaceStyle;
+    }
+
+
+    public String getText() {
+        return mText;
+    }
+
+    public void setText(String text) {
+        mText = DataUtils.getTruncatedCommandOutput(text, TEXT_SIZE_LIMIT_IN_BYTES, true, false, false);
+    }
+
+    public int getTextSize() {
+        return mTextSize;
+    }
+
+    public void setTextSize(int textSize) {
+        if (textSize > 0)
+            mTextSize = textSize;
+    }
+
+    public int getTextLengthLimit() {
+        return mTextLengthLimit;
+    }
+
+    public void setTextLengthLimit(int textLengthLimit) {
+        if (textLengthLimit < TEXT_SIZE_LIMIT_IN_BYTES)
+            mTextLengthLimit = textLengthLimit;
+    }
+
+    public int getTextColor() {
+        return mTextColor;
+    }
+
+    public void setTextColor(int textColor) {
+        mTextColor = textColor;
+    }
+
+    public String getTextTypeFaceFamily() {
+        return mTextTypeFaceFamily;
+    }
+
+    public void setTextTypeFaceFamily(String textTypeFaceFamily) {
+        mTextTypeFaceFamily = textTypeFaceFamily;
+    }
+
+    public int getTextTypeFaceStyle() {
+        return mTextTypeFaceStyle;
+    }
+
+    public void setTextTypeFaceStyle(int textTypeFaceStyle) {
+        mTextTypeFaceStyle = textTypeFaceStyle;
+    }
+
+    public boolean isHorizontallyScrollable() {
+        return mTextHorizontallyScrolling;
+    }
+
+    public void setTextHorizontallyScrolling(boolean textHorizontallyScrolling) {
+        mTextHorizontallyScrolling = textHorizontallyScrolling;
+    }
+
+    public boolean shouldShowTextCharacterUsage() {
+        return mShowTextCharacterUsage;
+    }
+
+    public void setShowTextCharacterUsage(boolean showTextCharacterUsage) {
+        mShowTextCharacterUsage = showTextCharacterUsage;
+    }
+
+    public boolean isEditingTextDisabled() {
+        return mEditingTextDisabled;
+    }
+
+    public void setEditingTextDisabled(boolean editingTextDisabled) {
+        mEditingTextDisabled = editingTextDisabled;
+    }
+
+}