FairEmail/app/src/main/java/eu/faircode/email/EditTextCompose.java

737 lines
31 KiB
Java

package eu.faircode.email;
/*
This file is part of FairEmail.
FairEmail is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
FairEmail is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with FairEmail. If not, see <http://www.gnu.org/licenses/>.
Copyright 2018-2022 by Marcel Bokhorst (M66B)
*/
import android.content.ClipData;
import android.content.ClipboardManager;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.graphics.Typeface;
import android.graphics.drawable.Drawable;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.os.Parcel;
import android.os.Parcelable;
import android.text.Editable;
import android.text.SpannableStringBuilder;
import android.text.Spanned;
import android.text.TextUtils;
import android.text.style.QuoteSpan;
import android.text.style.StyleSpan;
import android.util.AttributeSet;
import android.view.ActionMode;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.inputmethod.EditorInfo;
import android.view.inputmethod.InputConnection;
import android.view.inputmethod.InputConnectionWrapper;
import android.widget.EditText;
import android.widget.Toast;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.view.inputmethod.EditorInfoCompat;
import androidx.core.view.inputmethod.InputConnectionCompat;
import androidx.core.view.inputmethod.InputContentInfoCompat;
import androidx.preference.PreferenceManager;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import java.util.List;
import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;
public class EditTextCompose extends FixedEditText {
private boolean raw = false;
private ISelection selectionListener = null;
private IInputContentListener inputContentListener = null;
private Boolean canUndo = null;
private Boolean canRedo = null;
private List<EntityAnswer> snippets;
private int colorPrimary;
private int colorBlockquote;
private int quoteGap;
private int quoteStripe;
public EditTextCompose(Context context) {
super(context);
init(context);
}
public EditTextCompose(Context context, AttributeSet attrs) {
super(context, attrs);
init(context);
}
public EditTextCompose(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
init(context);
}
void init(Context context) {
Helper.setKeyboardIncognitoMode(this, context);
colorPrimary = Helper.resolveColor(context, R.attr.colorPrimary);
colorBlockquote = Helper.resolveColor(context, R.attr.colorBlockquote, colorPrimary);
quoteGap = context.getResources().getDimensionPixelSize(R.dimen.quote_gap_size);
quoteStripe = context.getResources().getDimensionPixelSize(R.dimen.quote_stripe_width);
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
boolean undo_manager = prefs.getBoolean("undo_manager", false);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
setCustomSelectionActionModeCallback(new ActionMode.Callback() {
@Override
public boolean onCreateActionMode(ActionMode mode, Menu menu) {
try {
int order = 1000;
menu.add(Menu.CATEGORY_SECONDARY, R.string.title_insert_brackets,
order++, context.getString(R.string.title_insert_brackets));
menu.add(Menu.CATEGORY_SECONDARY, R.string.title_insert_quotes,
order++, context.getString(R.string.title_insert_quotes));
menu.add(Menu.CATEGORY_SECONDARY, R.string.title_lt_add,
order++, context.getString(R.string.title_lt_add));
menu.add(Menu.CATEGORY_SECONDARY, R.string.title_lt_delete,
order++, context.getString(R.string.title_lt_delete));
} catch (Throwable ex) {
Log.e(ex);
}
return true;
}
@Override
public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
int start = getSelectionStart();
int end = getSelectionEnd();
boolean selection = (start >= 0 && start < end);
Context context = getContext();
Editable edit = getText();
boolean dictionary = (selection &&
context instanceof AppCompatActivity &&
LanguageTool.isPremium(context) &&
edit != null &&
edit.subSequence(start, end).toString().indexOf(' ') < 0);
menu.findItem(R.string.title_insert_brackets).setVisible(selection);
menu.findItem(R.string.title_insert_quotes).setVisible(selection);
menu.findItem(R.string.title_lt_add).setVisible(dictionary);
menu.findItem(R.string.title_lt_delete).setVisible(dictionary);
return false;
}
@Override
public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
if (item.getGroupId() == Menu.CATEGORY_SECONDARY) {
int id = item.getItemId();
if (id == R.string.title_insert_brackets)
return surround("(", ")");
else if (id == R.string.title_insert_quotes)
return surround("\"", "\"");
else if (id == R.string.title_lt_add)
return modifyDictionary(true);
else if (id == R.string.title_lt_delete)
return modifyDictionary(false);
}
return false;
}
@Override
public void onDestroyActionMode(ActionMode mode) {
// Do nothing
}
private boolean surround(String before, String after) {
Editable edit = getText();
int start = getSelectionStart();
int end = getSelectionEnd();
boolean selection = (edit != null && start >= 0 && start < end);
if (selection) {
int s = start - before.length();
int e = end + after.length();
if (s >= 0 && e < length() &&
edit.subSequence(s, start).toString().equals(before) &&
edit.subSequence(end, e).toString().equals(after)) {
edit.delete(end, e);
edit.delete(s, start);
} else {
edit.insert(end, after);
edit.insert(start, before);
}
}
return selection;
}
private boolean modifyDictionary(boolean add) {
int start = getSelectionStart();
int end = getSelectionEnd();
if (start < 0 || start >= end)
return false;
final Context context = getContext();
if (!(context instanceof AppCompatActivity))
return false;
AppCompatActivity activity = (AppCompatActivity) getContext();
Editable edit = getText();
if (edit == null)
return false;
String word = edit.subSequence(start, end).toString();
Bundle args = new Bundle();
args.putString("word", word);
args.putBoolean("add", add);
new SimpleTask<Void>() {
@Override
protected Void onExecute(Context context, Bundle args) throws Throwable {
String word = args.getString("word");
boolean add = args.getBoolean("add");
LanguageTool.modifyDictionary(context, word, null, add);
return null;
}
@Override
protected void onExecuted(Bundle args, Void data) {
setSelection(end);
}
@Override
protected void onException(Bundle args, Throwable ex) {
ToastEx.makeText(getContext(), ex.toString(), Toast.LENGTH_LONG).show();
}
}.execute(activity, args, "dictionary:modify");
return true;
}
});
setCustomInsertionActionModeCallback(new ActionMode.Callback() {
@Override
public boolean onCreateActionMode(ActionMode mode, Menu menu) {
try {
int order = 1000;
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O)
menu.add(Menu.CATEGORY_SECONDARY, android.R.id.pasteAsPlainText, order++, getTitle(R.string.title_paste_plain));
if (undo_manager && can(android.R.id.undo))
menu.add(Menu.CATEGORY_SECONDARY, R.string.title_undo, order++, getTitle(R.string.title_undo));
if (undo_manager && can(android.R.id.redo))
menu.add(Menu.CATEGORY_SECONDARY, R.string.title_redo, order++, getTitle(R.string.title_redo));
menu.add(Menu.CATEGORY_SECONDARY, R.string.title_insert_line, order++, context.getString(R.string.title_insert_line));
if (snippets != null)
for (EntityAnswer snippet : snippets) {
menu.add(Menu.CATEGORY_SECONDARY, order, order, snippet.name).
setIntent(new Intent().putExtra("id", snippet.id));
order++;
}
} catch (Throwable ex) {
Log.e(ex);
}
return true;
}
private CharSequence getTitle(int resid) {
SpannableStringBuilder ssb = new SpannableStringBuilderEx(context.getString(resid));
ssb.setSpan(new StyleSpan(Typeface.ITALIC), 0, ssb.length(), 0);
return ssb;
}
@Override
public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
return false;
}
@Override
public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
if (item.getGroupId() == Menu.CATEGORY_SECONDARY) {
int id = item.getItemId();
if (id == android.R.id.pasteAsPlainText)
return insertPlain();
else if (id == R.string.title_undo)
return EditTextCompose.super.onTextContextMenuItem(android.R.id.undo);
else if (id == R.string.title_redo)
return EditTextCompose.super.onTextContextMenuItem(android.R.id.redo);
else if (id == R.string.title_insert_line)
return insertLine();
else {
Intent intent = item.getIntent();
if (intent == null)
return false;
return insertSnippet(intent.getLongExtra("id", -1L));
}
}
return false;
}
@Override
public void onDestroyActionMode(ActionMode mode) {
// Do nothing
}
private boolean insertPlain() {
ClipboardManager cbm = Helper.getSystemService(context, ClipboardManager.class);
if (!cbm.hasPrimaryClip())
return true;
ClipData clip = cbm.getPrimaryClip();
if (clip == null || clip.getItemCount() < 1)
return true;
ClipData.Item item = clip.getItemAt(0);
if (item == null)
return true;
CharSequence text = item.getText();
if (TextUtils.isEmpty(text))
return true;
int start = getSelectionStart();
if (start < 0)
start = 0;
getText().insert(start, text.toString());
return true;
}
private boolean insertLine() {
try {
int start = getSelectionStart();
if (start < 0)
return false;
Editable edit = getText();
if (edit == null)
return false;
if (start == 0 || edit.charAt(start - 1) != '\n')
edit.insert(start++, "\n");
if (start == edit.length() || edit.charAt(start) != '\n')
edit.insert(start, "\n");
edit.insert(start, "\uFFFC"); // Object replacement character
int colorSeparator = Helper.resolveColor(getContext(), R.attr.colorSeparator);
float stroke = context.getResources().getDisplayMetrics().density;
edit.setSpan(
new LineSpan(colorSeparator, stroke, 0f),
start, start + 1,
Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
setSelection(start + 2);
return true;
} catch (Throwable ex) {
Log.e(ex);
ToastEx.makeText(context, Log.formatThrowable(ex), Toast.LENGTH_LONG).show();
return false;
}
}
private boolean insertSnippet(long id) {
if (snippets == null)
return false;
InternetAddress[] to = null;
try {
View root = getRootView();
EditText etTo = (root == null ? null : root.findViewById(R.id.etTo));
if (etTo != null)
to = MessageHelper.parseAddresses(getContext(), etTo.getText().toString());
} catch (AddressException ignored) {
}
for (EntityAnswer snippet : snippets)
if (snippet.id.equals(id)) {
String html = snippet.getHtml(context, to);
Helper.getParallelExecutor().submit(new Runnable() {
@Override
public void run() {
try {
SpannableStringBuilder ssb = getSpanned(context, html);
int len = ssb.length();
if (len > 0 && ssb.charAt(len - 1) == '\n')
ssb.replace(len - 1, len, " ");
EditTextCompose.this.post(new Runnable() {
@Override
public void run() {
try {
int start = getSelectionStart();
if (start < 0)
start = 0;
Editable edit = getText();
if (start > 0) {
char kar = edit.charAt(start - 1);
if (!(kar == '\n' || kar == ' '))
edit.insert(start++, " ");
}
edit.insert(start, ssb);
setSelection(start + ssb.length());
} catch (Throwable ex) {
Log.e(ex);
}
}
});
} catch (Throwable ex) {
Log.e(ex);
}
}
});
return true;
}
return false;
}
});
DB db = DB.getInstance(context);
Helper.getParallelExecutor().submit(new Runnable() {
@Override
public void run() {
try {
snippets = db.answer().getSnippets();
} catch (Throwable ex) {
Log.e(ex);
}
}
});
}
}
private boolean can(int what) {
canUndo = null;
canRedo = null;
try {
int meta = KeyEvent.META_CTRL_ON;
if (what == android.R.id.redo)
meta = meta | KeyEvent.META_SHIFT_ON;
KeyEvent ke = new KeyEvent(0, 0, 0, 0, 0, meta);
onKeyShortcut(KeyEvent.KEYCODE_Z, ke);
} catch (Throwable ex) {
Log.e(ex);
}
return Boolean.TRUE.equals(what == android.R.id.redo ? canRedo : canUndo);
}
@Override
public Parcelable onSaveInstanceState() {
Parcelable superState = super.onSaveInstanceState();
return new SavedState(superState, this.raw);
}
@Override
public void onRestoreInstanceState(Parcelable state) {
SavedState savedState = (SavedState) state;
super.onRestoreInstanceState(savedState.getSuperState());
setRaw(savedState.getRaw());
}
@Override
protected void onAttachedToWindow() {
// Spellchecker workaround
boolean enabled = isEnabled();
super.setEnabled(true);
super.onAttachedToWindow();
super.setEnabled(enabled);
}
public void setRaw(boolean raw) {
this.raw = raw;
}
public boolean isRaw() {
return raw;
}
@Override
protected void onSelectionChanged(int selStart, int selEnd) {
super.onSelectionChanged(selStart, selEnd);
if (selectionListener != null)
selectionListener.onSelected(hasSelection());
}
@Override
public boolean onTextContextMenuItem(int id) {
try {
if (id == android.R.id.copy) {
int start = getSelectionStart();
int end = getSelectionEnd();
if (start > end) {
int s = start;
start = end;
end = s;
}
Context context = getContext();
ClipboardManager cbm = Helper.getSystemService(context, ClipboardManager.class);
if (start != end && cbm != null) {
CharSequence selected = getEditableText().subSequence(start, end);
if (selected instanceof Spanned) {
String html = HtmlHelper.toHtml((Spanned) selected, context);
cbm.setPrimaryClip(ClipData.newHtmlText(context.getString(R.string.app_name), selected, html));
setSelection(end);
return true;
}
}
} else if (id == android.R.id.paste) {
final Context context = getContext();
ClipboardManager cbm = Helper.getSystemService(context, ClipboardManager.class);
if (cbm == null || !cbm.hasPrimaryClip())
return false;
ClipData.Item item = cbm.getPrimaryClip().getItemAt(0);
final String html;
String h = item.getHtmlText();
if (h == null) {
CharSequence text = item.getText();
if (text == null)
return false;
html = "<div>" + HtmlHelper.formatPlainText(text.toString(), false) + "</div>";
} else
html = h;
Helper.getParallelExecutor().submit(new Runnable() {
@Override
public void run() {
try {
SpannableStringBuilder ssb = (raw)
? new SpannableStringBuilderEx(html)
: getSpanned(context, html);
EditTextCompose.this.post(new Runnable() {
@Override
public void run() {
try {
int start = getSelectionStart();
int end = getSelectionEnd();
if (start < 0)
start = 0;
if (end < 0)
end = 0;
if (start > end) {
int tmp = start;
start = end;
end = tmp;
}
if (start == end)
getText().insert(start, ssb);
else
getText().replace(start, end, ssb);
} catch (Throwable ex) {
Log.e(ex);
/*
java.lang.RuntimeException: PARAGRAPH span must start at paragraph boundary
at android.text.SpannableStringBuilder.setSpan(SpannableStringBuilder.java:619)
at android.text.SpannableStringBuilder.change(SpannableStringBuilder.java:391)
at android.text.SpannableStringBuilder.replace(SpannableStringBuilder.java:496)
at android.text.SpannableStringBuilder.replace(SpannableStringBuilder.java:454)
at android.text.SpannableStringBuilder.replace(SpannableStringBuilder.java:33)
at android.widget.TextView.paste(TextView.java:8891)
at android.widget.TextView.onTextContextMenuItem(TextView.java:8706)
*/
}
}
});
} catch (Throwable ex) {
Log.e(ex);
}
}
});
return true;
} else if (id == android.R.id.undo) {
canUndo = true;
return true;
} else if (id == android.R.id.redo) {
canRedo = true;
return true;
}
return super.onTextContextMenuItem(id);
} catch (Throwable ex) {
Log.e(ex);
return false;
}
}
private SpannableStringBuilder getSpanned(Context context, String html) {
Document document = HtmlHelper.sanitizeCompose(context, html, false);
Spanned paste = HtmlHelper.fromDocument(context, document, new HtmlHelper.ImageGetterEx() {
@Override
public Drawable getDrawable(Element element) {
return ImageHelper.decodeImage(context,
-1, element, true, 0, 1.0f, EditTextCompose.this);
}
}, null);
SpannableStringBuilder ssb = new SpannableStringBuilderEx(paste);
QuoteSpan[] spans = ssb.getSpans(0, ssb.length(), QuoteSpan.class);
for (QuoteSpan span : spans) {
QuoteSpan q;
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.P)
q = new QuoteSpan(colorBlockquote);
else
q = new QuoteSpan(colorBlockquote, quoteStripe, quoteGap);
ssb.setSpan(q,
ssb.getSpanStart(span),
ssb.getSpanEnd(span),
ssb.getSpanFlags(span));
ssb.removeSpan(span);
}
return ssb;
}
@Override
public InputConnection onCreateInputConnection(EditorInfo editorInfo) {
//https://developer.android.com/guide/topics/text/image-keyboard
InputConnection ic = super.onCreateInputConnection(editorInfo);
if (ic == null)
return null;
ic = new InputConnectionWrapper(ic, false) {
@Override
public boolean deleteSurroundingText(int beforeLength, int afterLength) {
try {
return super.deleteSurroundingText(beforeLength, afterLength);
} catch (Throwable ex) {
Log.w(ex);
return true;
/*
java.lang.IndexOutOfBoundsException: replace (107 ... -2147483542) has end before start
at android.text.SpannableStringBuilder.checkRange(SpannableStringBuilder.java:1318)
at android.text.SpannableStringBuilder.replace(SpannableStringBuilder.java:513)
at androidx.emoji2.text.SpannableBuilder.replace(SourceFile:7)
at android.text.SpannableStringBuilder.delete(SpannableStringBuilder.java:230)
at androidx.emoji2.text.SpannableBuilder.delete(SourceFile:2)
at androidx.emoji2.text.SpannableBuilder.delete(SourceFile:1)
at android.view.inputmethod.BaseInputConnection.deleteSurroundingText(BaseInputConnection.java:276)
at android.view.inputmethod.InputConnectionWrapper.deleteSurroundingText(InputConnectionWrapper.java:133)
at androidx.emoji2.viewsintegration.EmojiInputConnection.deleteSurroundingText(SourceFile:17)
at android.view.inputmethod.InputConnectionWrapper.deleteSurroundingText(InputConnectionWrapper.java:133)
*/
}
}
@Override
public boolean deleteSurroundingTextInCodePoints(int beforeLength, int afterLength) {
try {
return super.deleteSurroundingTextInCodePoints(beforeLength, afterLength);
} catch (Throwable ex) {
Log.w(ex);
return true;
}
}
};
EditorInfoCompat.setContentMimeTypes(editorInfo, new String[]{"image/*"});
return InputConnectionCompat.createWrapper(ic, editorInfo, new InputConnectionCompat.OnCommitContentListener() {
@Override
public boolean onCommitContent(InputContentInfoCompat info, int flags, Bundle opts) {
Log.i("Uri=" + info.getContentUri());
try {
if (inputContentListener == null)
throw new IllegalArgumentException("InputContent listener not set");
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N_MR1 &&
(flags & InputConnectionCompat.INPUT_CONTENT_GRANT_READ_URI_PERMISSION) != 0)
info.requestPermission();
inputContentListener.onInputContent(info.getContentUri());
return true;
} catch (Throwable ex) {
Log.w(ex);
return false;
}
}
});
}
void setInputContentListener(IInputContentListener listener) {
this.inputContentListener = listener;
}
interface IInputContentListener {
void onInputContent(Uri uri);
}
void setSelectionListener(ISelection listener) {
this.selectionListener = listener;
}
interface ISelection {
void onSelected(boolean selection);
}
static class SavedState extends View.BaseSavedState {
private boolean raw;
private SavedState(Parcelable superState, boolean raw) {
super(superState);
this.raw = raw;
}
private SavedState(Parcel in) {
super(in);
raw = (in.readInt() != 0);
}
public boolean getRaw() {
return this.raw;
}
@Override
public void writeToParcel(Parcel destination, int flags) {
super.writeToParcel(destination, flags);
destination.writeInt(raw ? 1 : 0);
}
public static final Parcelable.Creator<SavedState> CREATOR = new Creator<SavedState>() {
public SavedState createFromParcel(Parcel in) {
return new SavedState(in);
}
public SavedState[] newArray(int size) {
return new SavedState[size];
}
};
}
}