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1 // Copyright 2016 The Chromium Authors. All rights reserved. | 1 // Copyright 2016 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #import "ios/chrome/browser/ui/content_suggestions/content_suggestions_collectio n_updater.h" | 5 #import "ios/chrome/browser/ui/content_suggestions/content_suggestions_collectio n_updater.h" |
6 | 6 |
7 #include "base/logging.h" | 7 #include "base/logging.h" |
8 #include "base/mac/foundation_util.h" | 8 #include "base/mac/foundation_util.h" |
9 #include "base/time/time.h" | 9 #include "base/time/time.h" |
10 #include "components/strings/grit/components_strings.h" | |
10 #import "ios/chrome/browser/ui/collection_view/cells/collection_view_text_item.h " | 11 #import "ios/chrome/browser/ui/collection_view/cells/collection_view_text_item.h " |
11 #import "ios/chrome/browser/ui/collection_view/collection_view_controller.h" | 12 #import "ios/chrome/browser/ui/collection_view/collection_view_controller.h" |
12 #import "ios/chrome/browser/ui/collection_view/collection_view_model.h" | 13 #import "ios/chrome/browser/ui/collection_view/collection_view_model.h" |
13 #import "ios/chrome/browser/ui/content_suggestions/cells/content_suggestions_art icle_item.h" | 14 #import "ios/chrome/browser/ui/content_suggestions/cells/content_suggestions_art icle_item.h" |
14 #import "ios/chrome/browser/ui/content_suggestions/cells/content_suggestions_but ton_item.h" | 15 #import "ios/chrome/browser/ui/content_suggestions/cells/content_suggestions_but ton_item.h" |
15 #import "ios/chrome/browser/ui/content_suggestions/cells/content_suggestions_exp andable_item.h" | 16 #import "ios/chrome/browser/ui/content_suggestions/cells/content_suggestions_exp andable_item.h" |
16 #import "ios/chrome/browser/ui/content_suggestions/cells/content_suggestions_fav icon_item.h" | 17 #import "ios/chrome/browser/ui/content_suggestions/cells/content_suggestions_fav icon_item.h" |
17 #import "ios/chrome/browser/ui/content_suggestions/cells/content_suggestions_foo ter_item.h" | 18 #import "ios/chrome/browser/ui/content_suggestions/cells/content_suggestions_foo ter_item.h" |
18 #import "ios/chrome/browser/ui/content_suggestions/cells/content_suggestions_sta ck_item.h" | 19 #import "ios/chrome/browser/ui/content_suggestions/cells/content_suggestions_sta ck_item.h" |
20 #import "ios/chrome/browser/ui/content_suggestions/cells/content_suggestions_tex t_item.h" | |
19 #import "ios/chrome/browser/ui/content_suggestions/content_suggestion.h" | 21 #import "ios/chrome/browser/ui/content_suggestions/content_suggestion.h" |
20 #import "ios/chrome/browser/ui/content_suggestions/content_suggestions_data_sink .h" | 22 #import "ios/chrome/browser/ui/content_suggestions/content_suggestions_data_sink .h" |
21 #import "ios/chrome/browser/ui/content_suggestions/content_suggestions_data_sour ce.h" | 23 #import "ios/chrome/browser/ui/content_suggestions/content_suggestions_data_sour ce.h" |
22 #import "ios/chrome/browser/ui/content_suggestions/content_suggestions_image_fet cher.h" | 24 #import "ios/chrome/browser/ui/content_suggestions/content_suggestions_image_fet cher.h" |
23 #import "ios/chrome/browser/ui/content_suggestions/content_suggestions_view_cont roller.h" | 25 #import "ios/chrome/browser/ui/content_suggestions/content_suggestions_view_cont roller.h" |
24 #import "ios/chrome/browser/ui/content_suggestions/identifier/content_suggestion _identifier.h" | 26 #import "ios/chrome/browser/ui/content_suggestions/identifier/content_suggestion _identifier.h" |
25 #import "ios/chrome/browser/ui/content_suggestions/identifier/content_suggestion s_section_information.h" | 27 #import "ios/chrome/browser/ui/content_suggestions/identifier/content_suggestion s_section_information.h" |
28 #include "ui/base/l10n/l10n_util.h" | |
26 #include "ui/gfx/image/image.h" | 29 #include "ui/gfx/image/image.h" |
27 #include "url/gurl.h" | 30 #include "url/gurl.h" |
28 | 31 |
29 #if !defined(__has_feature) || !__has_feature(objc_arc) | 32 #if !defined(__has_feature) || !__has_feature(objc_arc) |
30 #error "This file requires ARC support." | 33 #error "This file requires ARC support." |
31 #endif | 34 #endif |
32 | 35 |
33 namespace { | 36 namespace { |
34 | 37 |
38 using CSCollectionViewItem = | |
39 CollectionViewItem<ContentSuggestionIdentification>; | |
40 using CSCollectionViewModel = CollectionViewModel<CSCollectionViewItem*>; | |
41 | |
35 // Enum defining the ItemType of this ContentSuggestionsCollectionUpdater. | 42 // Enum defining the ItemType of this ContentSuggestionsCollectionUpdater. |
36 typedef NS_ENUM(NSInteger, ItemType) { | 43 typedef NS_ENUM(NSInteger, ItemType) { |
37 ItemTypeText = kItemTypeEnumZero, | 44 ItemTypeText = kItemTypeEnumZero, |
38 ItemTypeArticle, | 45 ItemTypeArticle, |
39 ItemTypeExpand, | 46 ItemTypeExpand, |
40 ItemTypeStack, | 47 ItemTypeStack, |
41 ItemTypeFavicon, | 48 ItemTypeFavicon, |
42 ItemTypeFooter, | 49 ItemTypeFooter, |
43 ItemTypeHeader, | 50 ItemTypeHeader, |
51 ItemTypeEmpty, | |
44 }; | 52 }; |
45 | 53 |
46 typedef NS_ENUM(NSInteger, SectionIdentifier) { | 54 typedef NS_ENUM(NSInteger, SectionIdentifier) { |
47 SectionIdentifierBookmarks = kSectionIdentifierEnumZero, | 55 SectionIdentifierBookmarks = kSectionIdentifierEnumZero, |
48 SectionIdentifierArticles, | 56 SectionIdentifierArticles, |
49 SectionIdentifierDefault, | 57 SectionIdentifierDefault, |
50 }; | 58 }; |
51 | 59 |
52 ItemType ItemTypeForContentSuggestionType(ContentSuggestionType type) { | 60 ItemType ItemTypeForContentSuggestionType(ContentSuggestionType type) { |
53 switch (type) { | 61 switch (type) { |
54 case ContentSuggestionTypeArticle: | 62 case ContentSuggestionTypeArticle: |
55 return ItemTypeArticle; | 63 return ItemTypeArticle; |
64 case ContentSuggestionTypeEmpty: | |
65 return ItemTypeEmpty; | |
56 } | 66 } |
57 } | 67 } |
58 | 68 |
59 ContentSuggestionType ContentSuggestionTypeForItemType(NSInteger type) { | 69 ContentSuggestionType ContentSuggestionTypeForItemType(NSInteger type) { |
60 if (type == ItemTypeArticle) | 70 if (type == ItemTypeArticle) |
61 return ContentSuggestionTypeArticle; | 71 return ContentSuggestionTypeArticle; |
72 if (type == ItemTypeEmpty) | |
73 return ContentSuggestionTypeEmpty; | |
62 // Add new type here | 74 // Add new type here |
63 | 75 |
64 // Default type. | 76 // Default type. |
65 return ContentSuggestionTypeArticle; | 77 return ContentSuggestionTypeEmpty; |
66 } | 78 } |
67 | 79 |
68 // Returns the section identifier corresponding to the section |info|. | 80 // Returns the section identifier corresponding to the section |info|. |
69 SectionIdentifier SectionIdentifierForInfo( | 81 SectionIdentifier SectionIdentifierForInfo( |
70 ContentSuggestionsSectionInformation* info) { | 82 ContentSuggestionsSectionInformation* info) { |
71 switch (info.sectionID) { | 83 switch (info.sectionID) { |
72 case ContentSuggestionsSectionBookmarks: | 84 case ContentSuggestionsSectionBookmarks: |
73 return SectionIdentifierBookmarks; | 85 return SectionIdentifierBookmarks; |
74 | 86 |
75 case ContentSuggestionsSectionArticles: | 87 case ContentSuggestionsSectionArticles: |
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117 | 129 |
118 [self reloadAllData]; | 130 [self reloadAllData]; |
119 } | 131 } |
120 | 132 |
121 #pragma mark - ContentSuggestionsDataSink | 133 #pragma mark - ContentSuggestionsDataSink |
122 | 134 |
123 - (void)dataAvailableForSection: | 135 - (void)dataAvailableForSection: |
124 (ContentSuggestionsSectionInformation*)sectionInfo { | 136 (ContentSuggestionsSectionInformation*)sectionInfo { |
125 SectionIdentifier sectionIdentifier = SectionIdentifierForInfo(sectionInfo); | 137 SectionIdentifier sectionIdentifier = SectionIdentifierForInfo(sectionInfo); |
126 | 138 |
127 CollectionViewModel* model = | 139 CSCollectionViewModel* model = |
128 self.collectionViewController.collectionViewModel; | 140 self.collectionViewController.collectionViewModel; |
129 if ([model hasSectionForSectionIdentifier:sectionIdentifier] && | 141 if ([model hasSectionForSectionIdentifier:sectionIdentifier] && |
130 [model itemsInSectionWithIdentifier:sectionIdentifier].count > 0) { | 142 [model itemsInSectionWithIdentifier:sectionIdentifier].count > 0) { |
131 // Do not dismiss the presented items. | 143 // Do not dismiss the presented items. |
132 return; | 144 return; |
133 } | 145 } |
134 | 146 |
135 [self.collectionViewController | 147 [self.collectionViewController |
136 addSuggestions:[self.dataSource suggestionsForSection:sectionInfo]]; | 148 addSuggestions:[self.dataSource suggestionsForSection:sectionInfo]]; |
137 } | 149 } |
138 | 150 |
139 - (void)clearSuggestion:(ContentSuggestionIdentifier*)suggestionIdentifier { | 151 - (void)clearSuggestion:(ContentSuggestionIdentifier*)suggestionIdentifier { |
140 SectionIdentifier sectionIdentifier = | 152 SectionIdentifier sectionIdentifier = |
141 SectionIdentifierForInfo(suggestionIdentifier.sectionInfo); | 153 SectionIdentifierForInfo(suggestionIdentifier.sectionInfo); |
142 if (![self.collectionViewController.collectionViewModel | 154 if (![self.collectionViewController.collectionViewModel |
143 hasSectionForSectionIdentifier:sectionIdentifier]) { | 155 hasSectionForSectionIdentifier:sectionIdentifier]) { |
144 return; | 156 return; |
145 } | 157 } |
146 | 158 |
147 NSArray<CollectionViewItem<ContentSuggestionIdentification>*>* | 159 NSArray<CSCollectionViewItem*>* itemsInSection = |
148 itemsInSection = [self.collectionViewController.collectionViewModel | 160 [self.collectionViewController.collectionViewModel |
149 itemsInSectionWithIdentifier:sectionIdentifier]; | 161 itemsInSectionWithIdentifier:sectionIdentifier]; |
150 | 162 |
151 CollectionViewItem<ContentSuggestionIdentification>* correspondingItem = nil; | 163 CSCollectionViewItem* correspondingItem = nil; |
152 for (CollectionViewItem<ContentSuggestionIdentification>* item in | 164 for (CSCollectionViewItem* item in itemsInSection) { |
153 itemsInSection) { | |
154 if (item.suggestionIdentifier == suggestionIdentifier) { | 165 if (item.suggestionIdentifier == suggestionIdentifier) { |
155 correspondingItem = item; | 166 correspondingItem = item; |
156 break; | 167 break; |
157 } | 168 } |
158 } | 169 } |
159 | 170 |
160 if (!correspondingItem) | 171 if (!correspondingItem) |
161 return; | 172 return; |
162 | 173 |
163 NSIndexPath* indexPath = [self.collectionViewController.collectionViewModel | 174 NSIndexPath* indexPath = [self.collectionViewController.collectionViewModel |
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199 (CollectionViewItem*)item { | 210 (CollectionViewItem*)item { |
200 return ContentSuggestionTypeForItemType(item.type); | 211 return ContentSuggestionTypeForItemType(item.type); |
201 } | 212 } |
202 | 213 |
203 - (NSArray<NSIndexPath*>*)addSuggestionsToModel: | 214 - (NSArray<NSIndexPath*>*)addSuggestionsToModel: |
204 (NSArray<ContentSuggestion*>*)suggestions { | 215 (NSArray<ContentSuggestion*>*)suggestions { |
205 if (suggestions.count == 0) { | 216 if (suggestions.count == 0) { |
206 return [NSArray array]; | 217 return [NSArray array]; |
207 } | 218 } |
208 | 219 |
209 CollectionViewModel* model = | |
210 self.collectionViewController.collectionViewModel; | |
211 | |
212 NSMutableArray<NSIndexPath*>* indexPaths = [NSMutableArray array]; | 220 NSMutableArray<NSIndexPath*>* indexPaths = [NSMutableArray array]; |
213 for (ContentSuggestion* suggestion in suggestions) { | 221 for (ContentSuggestion* suggestion in suggestions) { |
214 NSInteger sectionIdentifier = | 222 ContentSuggestionsSectionInformation* sectionInfo = |
215 SectionIdentifierForInfo(suggestion.suggestionIdentifier.sectionInfo); | 223 suggestion.suggestionIdentifier.sectionInfo; |
224 NSInteger sectionIdentifier = SectionIdentifierForInfo(sectionInfo); | |
225 CSCollectionViewModel* model = | |
226 self.collectionViewController.collectionViewModel; | |
216 | 227 |
217 ContentSuggestionsArticleItem* articleItem = | 228 switch (suggestion.type) { |
218 [[ContentSuggestionsArticleItem alloc] | 229 case ContentSuggestionTypeEmpty: { |
219 initWithType:ItemTypeForContentSuggestionType(suggestion.type) | 230 if ([model hasSectionForSectionIdentifier:sectionIdentifier] && |
220 title:suggestion.title | 231 [model numberOfItemsInSection:[model sectionForSectionIdentifier: |
221 subtitle:suggestion.text | 232 sectionIdentifier]] == 0) { |
222 delegate:self | 233 CSCollectionViewItem* item = |
223 url:suggestion.url]; | 234 [self emptyItemForSectionInfo:sectionInfo]; |
235 NSIndexPath* addedIndexPath = | |
236 [self addItem:item toSectionWithIdentifier:sectionIdentifier]; | |
lpromero
2017/03/23 10:54:37
Is there a code path that would have two empty ite
gambard
2017/03/23 15:25:49
Yes. This is why I am testing to know if the secti
| |
237 [indexPaths addObject:addedIndexPath]; | |
lpromero
2017/03/23 10:54:37
You could reuse -addEmptyItemForSection: once it r
gambard
2017/03/23 15:25:49
I am not sure it makes sense here addEmptyItemForS
| |
238 } | |
239 break; | |
240 } | |
241 case ContentSuggestionTypeArticle: { | |
242 ContentSuggestionsArticleItem* articleItem = | |
243 [[ContentSuggestionsArticleItem alloc] | |
244 initWithType:ItemTypeForContentSuggestionType(suggestion.type) | |
245 title:suggestion.title | |
246 subtitle:suggestion.text | |
247 delegate:self | |
248 url:suggestion.url]; | |
224 | 249 |
225 articleItem.publisher = suggestion.publisher; | 250 articleItem.publisher = suggestion.publisher; |
226 articleItem.publishDate = suggestion.publishDate; | 251 articleItem.publishDate = suggestion.publishDate; |
227 | 252 |
228 articleItem.suggestionIdentifier = suggestion.suggestionIdentifier; | 253 articleItem.suggestionIdentifier = suggestion.suggestionIdentifier; |
229 | 254 |
230 NSInteger section = [model sectionForSectionIdentifier:sectionIdentifier]; | 255 NSIndexPath* addedIndexPath = [self addItem:articleItem |
231 NSInteger itemNumber = [model numberOfItemsInSection:section]; | 256 toSectionWithIdentifier:sectionIdentifier]; |
232 [model addItem:articleItem toSectionWithIdentifier:sectionIdentifier]; | 257 [indexPaths addObject:addedIndexPath]; |
233 | 258 break; |
234 [indexPaths | 259 } |
235 addObject:[NSIndexPath indexPathForItem:itemNumber inSection:section]]; | 260 } |
236 } | 261 } |
237 | 262 |
238 return indexPaths; | 263 return indexPaths; |
239 } | 264 } |
240 | 265 |
241 - (NSIndexSet*)addSectionsForSuggestionsToModel: | 266 - (NSIndexSet*)addSectionsForSuggestionsToModel: |
242 (NSArray<ContentSuggestion*>*)suggestions { | 267 (NSArray<ContentSuggestion*>*)suggestions { |
243 NSMutableIndexSet* indexSet = [NSMutableIndexSet indexSet]; | 268 NSMutableIndexSet* indexSet = [NSMutableIndexSet indexSet]; |
244 | 269 |
245 CollectionViewModel* model = | 270 CSCollectionViewModel* model = |
246 self.collectionViewController.collectionViewModel; | 271 self.collectionViewController.collectionViewModel; |
247 for (ContentSuggestion* suggestion in suggestions) { | 272 for (ContentSuggestion* suggestion in suggestions) { |
248 ContentSuggestionsSectionInformation* sectionInfo = | 273 ContentSuggestionsSectionInformation* sectionInfo = |
249 suggestion.suggestionIdentifier.sectionInfo; | 274 suggestion.suggestionIdentifier.sectionInfo; |
250 NSInteger sectionIdentifier = SectionIdentifierForInfo(sectionInfo); | 275 NSInteger sectionIdentifier = SectionIdentifierForInfo(sectionInfo); |
251 | 276 |
252 if (![model hasSectionForSectionIdentifier:sectionIdentifier]) { | 277 if ([model hasSectionForSectionIdentifier:sectionIdentifier] || |
253 [model addSectionWithIdentifier:sectionIdentifier]; | 278 (suggestion.type == ContentSuggestionTypeEmpty && |
254 self.sectionInfoBySectionIdentifier[@(sectionIdentifier)] = sectionInfo; | 279 !sectionInfo.showIfEmpty)) { |
255 [indexSet addIndex:[model sectionForSectionIdentifier:sectionIdentifier]]; | 280 continue; |
281 } | |
256 | 282 |
257 [self addHeader:suggestion.suggestionIdentifier.sectionInfo]; | 283 [model addSectionWithIdentifier:sectionIdentifier]; |
258 [self addFooterIfNeeded:suggestion.suggestionIdentifier.sectionInfo]; | 284 self.sectionInfoBySectionIdentifier[@(sectionIdentifier)] = sectionInfo; |
259 } | 285 [indexSet addIndex:[model sectionForSectionIdentifier:sectionIdentifier]]; |
286 | |
287 [self addHeader:sectionInfo]; | |
288 [self addFooterIfNeeded:sectionInfo]; | |
260 } | 289 } |
261 return indexSet; | 290 return indexSet; |
262 } | 291 } |
263 | 292 |
293 - (void)addEmptyItemForSection:(NSInteger)section { | |
lpromero
2017/03/23 10:54:37
Return the index path of the newly added item.
gambard
2017/03/23 15:25:49
Done.
| |
294 CSCollectionViewModel* model = | |
295 self.collectionViewController.collectionViewModel; | |
296 NSInteger sectionIdentifier = [model sectionIdentifierForSection:section]; | |
297 ContentSuggestionsSectionInformation* sectionInfo = | |
298 self.sectionInfoBySectionIdentifier[@(sectionIdentifier)]; | |
299 CSCollectionViewItem* item = [self emptyItemForSectionInfo:sectionInfo]; | |
300 [model addItem:item toSectionWithIdentifier:sectionIdentifier]; | |
301 } | |
302 | |
264 #pragma mark - ContentSuggestionsArticleItemDelegate | 303 #pragma mark - ContentSuggestionsArticleItemDelegate |
265 | 304 |
266 - (void)loadImageForArticleItem:(ContentSuggestionsArticleItem*)articleItem { | 305 - (void)loadImageForArticleItem:(ContentSuggestionsArticleItem*)articleItem { |
267 NSInteger sectionIdentifier = | 306 NSInteger sectionIdentifier = |
268 SectionIdentifierForInfo(articleItem.suggestionIdentifier.sectionInfo); | 307 SectionIdentifierForInfo(articleItem.suggestionIdentifier.sectionInfo); |
269 | 308 |
270 __weak ContentSuggestionsCollectionUpdater* weakSelf = self; | 309 __weak ContentSuggestionsCollectionUpdater* weakSelf = self; |
271 __weak ContentSuggestionsArticleItem* weakArticle = articleItem; | 310 __weak ContentSuggestionsArticleItem* weakArticle = articleItem; |
272 void (^imageFetchedCallback)(const gfx::Image&) = ^(const gfx::Image& image) { | 311 void (^imageFetchedCallback)(const gfx::Image&) = ^(const gfx::Image& image) { |
273 if (image.IsEmpty()) { | 312 if (image.IsEmpty()) { |
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338 } | 377 } |
339 | 378 |
340 // Runs the additional action for the section identified by |sectionInfo|. | 379 // Runs the additional action for the section identified by |sectionInfo|. |
341 - (void)runAdditionalActionForSection: | 380 - (void)runAdditionalActionForSection: |
342 (ContentSuggestionsSectionInformation*)sectionInfo { | 381 (ContentSuggestionsSectionInformation*)sectionInfo { |
343 SectionIdentifier sectionIdentifier = SectionIdentifierForInfo(sectionInfo); | 382 SectionIdentifier sectionIdentifier = SectionIdentifierForInfo(sectionInfo); |
344 | 383 |
345 NSMutableArray<ContentSuggestionIdentifier*>* knownSuggestionIdentifiers = | 384 NSMutableArray<ContentSuggestionIdentifier*>* knownSuggestionIdentifiers = |
346 [NSMutableArray array]; | 385 [NSMutableArray array]; |
347 | 386 |
348 NSArray<CollectionViewItem<ContentSuggestionIdentification>*>* | 387 NSArray<CSCollectionViewItem*>* knownSuggestions = |
349 knownSuggestions = [self.collectionViewController.collectionViewModel | 388 [self.collectionViewController.collectionViewModel |
350 itemsInSectionWithIdentifier:sectionIdentifier]; | 389 itemsInSectionWithIdentifier:sectionIdentifier]; |
351 for (CollectionViewItem<ContentSuggestionIdentification>* suggestion in | 390 for (CSCollectionViewItem* suggestion in knownSuggestions) { |
352 knownSuggestions) { | 391 if (suggestion.type != ItemTypeEmpty) { |
353 [knownSuggestionIdentifiers addObject:suggestion.suggestionIdentifier]; | 392 [knownSuggestionIdentifiers addObject:suggestion.suggestionIdentifier]; |
393 } | |
354 } | 394 } |
355 | 395 |
356 __weak ContentSuggestionsCollectionUpdater* weakSelf = self; | 396 __weak ContentSuggestionsCollectionUpdater* weakSelf = self; |
357 [self.dataSource | 397 [self.dataSource |
358 fetchMoreSuggestionsKnowing:knownSuggestionIdentifiers | 398 fetchMoreSuggestionsKnowing:knownSuggestionIdentifiers |
359 fromSectionInfo:sectionInfo | 399 fromSectionInfo:sectionInfo |
360 callback:^(NSArray<ContentSuggestion*>* suggestions) { | 400 callback:^(NSArray<ContentSuggestion*>* suggestions) { |
361 [weakSelf moreSuggestionsFetched:suggestions]; | 401 [weakSelf moreSuggestionsFetched:suggestions]; |
362 }]; | 402 }]; |
363 } | 403 } |
364 | 404 |
365 // Adds the |suggestions| to the collection view. All the suggestions must have | 405 // Adds the |suggestions| to the collection view. All the suggestions must have |
366 // the same sectionInfo. | 406 // the same sectionInfo. |
367 - (void)moreSuggestionsFetched:(NSArray<ContentSuggestion*>*)suggestions { | 407 - (void)moreSuggestionsFetched:(NSArray<ContentSuggestion*>*)suggestions { |
368 [self.collectionViewController addSuggestions:suggestions]; | 408 [self.collectionViewController addSuggestions:suggestions]; |
369 } | 409 } |
370 | 410 |
411 // Returns a item to be displayed when the section identified by |sectionInfo| | |
412 // is empty. | |
413 - (CSCollectionViewItem*)emptyItemForSectionInfo: | |
414 (ContentSuggestionsSectionInformation*)sectionInfo { | |
415 ContentSuggestionsTextItem* item = | |
416 [[ContentSuggestionsTextItem alloc] initWithType:ItemTypeEmpty]; | |
417 item.text = l10n_util::GetNSString(IDS_NTP_TITLE_NO_SUGGESTIONS); | |
418 item.detailText = sectionInfo.emptyText; | |
419 | |
420 return item; | |
421 } | |
422 | |
423 // Adds |item| to |sectionIdentifier| section of the model of the | |
424 // CollectionView. Returns the IndexPath of the newly added item. | |
425 - (NSIndexPath*)addItem:(CSCollectionViewItem*)item | |
426 toSectionWithIdentifier:(NSInteger)sectionIdentifier { | |
427 CSCollectionViewModel* model = | |
428 self.collectionViewController.collectionViewModel; | |
429 NSInteger section = [model sectionForSectionIdentifier:sectionIdentifier]; | |
430 NSInteger itemNumber = [model numberOfItemsInSection:section]; | |
431 [model addItem:item toSectionWithIdentifier:sectionIdentifier]; | |
432 | |
433 return [NSIndexPath indexPathForItem:itemNumber inSection:section]; | |
434 } | |
435 | |
371 @end | 436 @end |
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