Code refactor and break down

feature/recognize-text/src/main/java/ru/tech/imageresizershrinker/feature/recognize/text/presentation/components/OCRLanguageColumnForSearch.kt

@@ -0,0 +1,103 @@
+/*
+ * ImageToolbox is an image editor for android
+ * Copyright (c) 2025 T8RIN (Malik Mukhametzyanov)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * You should have received a copy of the Apache License
+ * along with this program.  If not, see <http://www.apache.org/licenses/LICENSE-2.0>.
+ */
+
+package ru.tech.imageresizershrinker.feature.recognize.text.presentation.components
+
+import androidx.compose.animation.animateColorAsState
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.PaddingValues
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.itemsIndexed
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.surfaceColorAtElevation
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.derivedStateOf
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.remember
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.unit.dp
+import ru.tech.imageresizershrinker.core.ui.widget.enhanced.EnhancedBottomSheetDefaults
+import ru.tech.imageresizershrinker.core.ui.widget.modifier.ContainerShapeDefaults
+import ru.tech.imageresizershrinker.core.ui.widget.preferences.PreferenceItem
+import ru.tech.imageresizershrinker.feature.recognize.text.domain.OCRLanguage
+import ru.tech.imageresizershrinker.feature.recognize.text.domain.RecognitionType
+
+@Composable
+internal fun OCRLanguageColumnForSearch(
+    languagesForSearch: List<OCRLanguage>,
+    value: List<OCRLanguage>,
+    currentRecognitionType: RecognitionType,
+    onValueChange: (List<OCRLanguage>, RecognitionType) -> Unit,
+    allowMultipleLanguagesSelection: Boolean
+) {
+    fun onValueChangeImpl(
+        selected: Boolean,
+        type: RecognitionType,
+        lang: OCRLanguage
+    ) {
+        if (allowMultipleLanguagesSelection) {
+            if (selected) {
+                onValueChange(
+                    (value - lang).distinct(),
+                    type
+                )
+            } else onValueChange(
+                (value + lang).distinct(),
+                type
+            )
+        } else onValueChange(listOf(lang), type)
+    }
+
+    LazyColumn(
+        contentPadding = PaddingValues(16.dp),
+        verticalArrangement = Arrangement.spacedBy(4.dp)
+    ) {
+        itemsIndexed(languagesForSearch) { index, lang ->
+            val selected by remember(value, lang) {
+                derivedStateOf {
+                    lang in value
+                }
+            }
+            PreferenceItem(
+                title = lang.name,
+                subtitle = lang.localizedName.takeIf { it != lang.name },
+                onClick = {
+                    onValueChangeImpl(
+                        selected = selected,
+                        type = currentRecognitionType,
+                        lang = lang
+                    )
+                },
+                color = animateColorAsState(
+                    if (selected) {
+                        MaterialTheme.colorScheme.surfaceColorAtElevation(
+                            20.dp
+                        )
+                    } else EnhancedBottomSheetDefaults.contentContainerColor
+                ).value,
+                shape = ContainerShapeDefaults.shapeForIndex(
+                    index = index,
+                    size = languagesForSearch.size
+                ),
+                modifier = Modifier
+                    .animateItem()
+                    .fillMaxWidth()
+            )
+        }
+    }
+}

feature/recognize-text/src/main/java/ru/tech/imageresizershrinker/feature/recognize/text/presentation/components/OCRLanguagesColumn.kt

@@ -0,0 +1,272 @@
+/*
+ * ImageToolbox is an image editor for android
+ * Copyright (c) 2025 T8RIN (Malik Mukhametzyanov)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * You should have received a copy of the Apache License
+ * along with this program.  If not, see <http://www.apache.org/licenses/LICENSE-2.0>.
+ */
+
+package ru.tech.imageresizershrinker.feature.recognize.text.presentation.components
+
+import androidx.compose.animation.animateColorAsState
+import androidx.compose.foundation.background
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.PaddingValues
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.width
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.LazyListState
+import androidx.compose.foundation.lazy.itemsIndexed
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.outlined.UploadFile
+import androidx.compose.material.icons.rounded.DownloadDone
+import androidx.compose.material.icons.rounded.DownloadForOffline
+import androidx.compose.material.icons.rounded.MultipleStop
+import androidx.compose.material3.Icon
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Text
+import androidx.compose.material3.surfaceColorAtElevation
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.derivedStateOf
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.remember
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.layout.layout
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.style.TextAlign
+import androidx.compose.ui.unit.dp
+import ru.tech.imageresizershrinker.core.resources.R
+import ru.tech.imageresizershrinker.core.resources.icons.DownloadFile
+import ru.tech.imageresizershrinker.core.ui.widget.enhanced.EnhancedBottomSheetDefaults
+import ru.tech.imageresizershrinker.core.ui.widget.modifier.ContainerShapeDefaults
+import ru.tech.imageresizershrinker.core.ui.widget.modifier.container
+import ru.tech.imageresizershrinker.core.ui.widget.other.GradientEdge
+import ru.tech.imageresizershrinker.core.ui.widget.preferences.PreferenceItem
+import ru.tech.imageresizershrinker.core.ui.widget.preferences.PreferenceRowSwitch
+import ru.tech.imageresizershrinker.core.ui.widget.text.TitleItem
+import ru.tech.imageresizershrinker.feature.recognize.text.domain.OCRLanguage
+import ru.tech.imageresizershrinker.feature.recognize.text.domain.RecognitionType
+
+@Composable
+internal fun OCRLanguagesColumn(
+    listState: LazyListState,
+    allowMultipleLanguagesSelection: Boolean,
+    value: List<OCRLanguage>,
+    currentRecognitionType: RecognitionType,
+    onValueChange: (List<OCRLanguage>, RecognitionType) -> Unit,
+    onImportLanguages: () -> Unit,
+    onExportLanguages: () -> Unit,
+    downloadedLanguages: List<OCRLanguage>,
+    notDownloadedLanguages: List<OCRLanguage>,
+    onWantDelete: (OCRLanguage) -> Unit,
+    onToggleAllowMultipleLanguagesSelection: () -> Unit
+) {
+    fun onValueChangeImpl(
+        selected: Boolean,
+        type: RecognitionType,
+        lang: OCRLanguage
+    ) {
+        if (allowMultipleLanguagesSelection) {
+            if (selected) {
+                onValueChange(
+                    (value - lang).distinct(),
+                    type
+                )
+            } else onValueChange(
+                (value + lang).distinct(),
+                type
+            )
+        } else onValueChange(listOf(lang), type)
+    }
+
+    LazyColumn(
+        state = listState,
+        contentPadding = PaddingValues(
+            start = 16.dp,
+            bottom = 16.dp,
+            end = 16.dp
+        ),
+        verticalArrangement = Arrangement.spacedBy(4.dp)
+    ) {
+        stickyHeader {
+            Column(
+                modifier = Modifier
+                    .layout { measurable, constraints ->
+                        val result = measurable.measure(
+                            constraints.copy(
+                                maxWidth = constraints.maxWidth + 32.dp.roundToPx()
+                            )
+                        )
+                        layout(
+                            result.measuredWidth,
+                            result.measuredHeight
+                        ) {
+                            result.place(0, 0)
+                        }
+                    }
+                    .background(EnhancedBottomSheetDefaults.containerColor)
+                    .padding(horizontal = 16.dp)
+            ) {
+                Spacer(modifier = Modifier.height(20.dp))
+                PreferenceRowSwitch(
+                    title = stringResource(R.string.allow_multiple_languages),
+                    color = animateColorAsState(
+                        if (allowMultipleLanguagesSelection) MaterialTheme.colorScheme.primaryContainer
+                        else MaterialTheme.colorScheme.surfaceContainer
+                    ).value,
+                    modifier = Modifier.fillMaxWidth(),
+                    shape = RoundedCornerShape(28.dp),
+                    checked = allowMultipleLanguagesSelection,
+                    startIcon = Icons.Rounded.MultipleStop,
+                    onClick = {
+                        if (!it) {
+                            onValueChange(
+                                value.take(1),
+                                currentRecognitionType
+                            )
+                        }
+                        onToggleAllowMultipleLanguagesSelection()
+                    }
+                )
+                Spacer(modifier = Modifier.height(8.dp))
+            }
+            GradientEdge(
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .height(16.dp),
+                startColor = EnhancedBottomSheetDefaults.containerColor,
+                endColor = Color.Transparent
+            )
+        }
+        item {
+            Column(
+                modifier = Modifier
+                    .container(
+                        shape = RoundedCornerShape(20.dp),
+                        color = EnhancedBottomSheetDefaults.contentContainerColor,
+                        resultPadding = 0.dp
+                    )
+                    .padding(8.dp),
+                horizontalAlignment = Alignment.CenterHorizontally,
+                verticalArrangement = Arrangement.Center
+            ) {
+                Spacer(modifier = Modifier.height(8.dp))
+                Text(
+                    text = stringResource(R.string.backup_ocr_models),
+                    textAlign = TextAlign.Center,
+                    fontWeight = FontWeight.Medium
+                )
+                Spacer(modifier = Modifier.height(16.dp))
+                Row(
+                    modifier = Modifier.fillMaxWidth()
+                ) {
+                    FillableButton(
+                        onClick = onImportLanguages,
+                        modifier = Modifier.weight(1f)
+                    ) {
+                        Icon(
+                            imageVector = Icons.Outlined.DownloadFile,
+                            contentDescription = null
+                        )
+                        Spacer(modifier = Modifier.width(8.dp))
+                        Text(text = stringResource(R.string.import_word))
+                    }
+                    Spacer(modifier = Modifier.width(4.dp))
+                    FillableButton(
+                        onClick = onExportLanguages,
+                        modifier = Modifier.weight(1f)
+                    ) {
+                        Icon(
+                            imageVector = Icons.Outlined.UploadFile,
+                            contentDescription = null
+                        )
+                        Spacer(modifier = Modifier.width(8.dp))
+                        Text(text = stringResource(R.string.export))
+                    }
+                }
+            }
+        }
+        if (downloadedLanguages.isNotEmpty()) {
+            item {
+                TitleItem(
+                    icon = Icons.Rounded.DownloadDone,
+                    text = stringResource(id = R.string.downloaded_languages)
+                )
+            }
+        }
+        itemsIndexed(downloadedLanguages) { index, lang ->
+            DownloadedLanguageItem(
+                index = index,
+                value = value,
+                lang = lang,
+                downloadedLanguages = downloadedLanguages,
+                onWantDelete = onWantDelete,
+                onValueChange = { selected, lang ->
+                    onValueChangeImpl(
+                        selected = selected,
+                        type = currentRecognitionType,
+                        lang = lang
+                    )
+                },
+                onValueChangeForced = onValueChange,
+                currentRecognitionType = currentRecognitionType
+            )
+        }
+        if (notDownloadedLanguages.isNotEmpty()) {
+            item {
+                TitleItem(
+                    icon = Icons.Rounded.DownloadForOffline,
+                    text = stringResource(id = R.string.available_languages)
+                )
+            }
+        }
+        itemsIndexed(notDownloadedLanguages) { index, lang ->
+            val selected by remember(value, lang) {
+                derivedStateOf {
+                    lang in value
+                }
+            }
+            PreferenceItem(
+                title = lang.name,
+                subtitle = lang.localizedName.takeIf { it != lang.name },
+                onClick = {
+                    onValueChangeImpl(
+                        selected = selected,
+                        type = currentRecognitionType,
+                        lang = lang
+                    )
+                },
+                color = animateColorAsState(
+                    if (selected) {
+                        MaterialTheme.colorScheme.surfaceColorAtElevation(20.dp)
+                    } else EnhancedBottomSheetDefaults.contentContainerColor
+                ).value,
+                shape = ContainerShapeDefaults.shapeForIndex(
+                    index = index,
+                    size = notDownloadedLanguages.size
+                ),
+                modifier = Modifier
+                    .animateItem()
+                    .fillMaxWidth()
+            )
+        }
+    }
+}