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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "mojo/services/public/cpp/view_manager/view_tree_node.h" | |
| 6 | |
| 7 #include "mojo/services/public/cpp/view_manager/lib/view_manager_synchronizer.h" | |
| 8 #include "mojo/services/public/cpp/view_manager/lib/view_private.h" | |
| 9 #include "mojo/services/public/cpp/view_manager/lib/view_tree_node_private.h" | |
| 10 #include "mojo/services/public/cpp/view_manager/view.h" | |
| 11 #include "mojo/services/public/cpp/view_manager/view_tree_node_observer.h" | |
| 12 | |
| 13 namespace mojo { | |
| 14 namespace view_manager { | |
| 15 | |
| 16 namespace { | |
| 17 | |
| 18 void NotifyViewTreeChangeAtReceiver( | |
| 19 ViewTreeNode* receiver, | |
| 20 const ViewTreeNodeObserver::TreeChangeParams& params) { | |
| 21 ViewTreeNodeObserver::TreeChangeParams local_params = params; | |
| 22 local_params.receiver = receiver; | |
| 23 FOR_EACH_OBSERVER(ViewTreeNodeObserver, | |
| 24 *ViewTreeNodePrivate(receiver).observers(), | |
| 25 OnTreeChange(local_params)); | |
| 26 } | |
| 27 | |
| 28 void NotifyViewTreeChangeUp( | |
| 29 ViewTreeNode* start_at, | |
| 30 const ViewTreeNodeObserver::TreeChangeParams& params) { | |
| 31 for (ViewTreeNode* current = start_at; current; current = current->parent()) | |
| 32 NotifyViewTreeChangeAtReceiver(current, params); | |
| 33 } | |
| 34 | |
| 35 void NotifyViewTreeChangeDown( | |
| 36 ViewTreeNode* start_at, | |
| 37 const ViewTreeNodeObserver::TreeChangeParams& params) { | |
| 38 NotifyViewTreeChangeAtReceiver(start_at, params); | |
| 39 ViewTreeNode::Children::const_iterator it = start_at->children().begin(); | |
| 40 for (; it != start_at->children().end(); ++it) | |
| 41 NotifyViewTreeChangeDown(*it, params); | |
| 42 } | |
| 43 | |
| 44 void NotifyViewTreeChange( | |
| 45 const ViewTreeNodeObserver::TreeChangeParams& params) { | |
| 46 NotifyViewTreeChangeDown(params.target, params); | |
| 47 if (params.old_parent) | |
| 48 NotifyViewTreeChangeUp(params.old_parent, params); | |
| 49 if (params.new_parent) | |
| 50 NotifyViewTreeChangeUp(params.new_parent, params); | |
| 51 } | |
| 52 | |
| 53 class ScopedTreeNotifier { | |
| 54 public: | |
| 55 ScopedTreeNotifier(ViewTreeNode* target, | |
| 56 ViewTreeNode* old_parent, | |
| 57 ViewTreeNode* new_parent) { | |
| 58 params_.target = target; | |
| 59 params_.old_parent = old_parent; | |
| 60 params_.new_parent = new_parent; | |
| 61 NotifyViewTreeChange(params_); | |
| 62 } | |
| 63 ~ScopedTreeNotifier() { | |
| 64 params_.phase = ViewTreeNodeObserver::DISPOSITION_CHANGED; | |
| 65 NotifyViewTreeChange(params_); | |
| 66 } | |
| 67 | |
| 68 private: | |
| 69 ViewTreeNodeObserver::TreeChangeParams params_; | |
| 70 | |
| 71 DISALLOW_COPY_AND_ASSIGN(ScopedTreeNotifier); | |
| 72 }; | |
| 73 | |
| 74 void RemoveChildImpl(ViewTreeNode* child, ViewTreeNode::Children* children) { | |
| 75 ViewTreeNode::Children::iterator it = | |
| 76 std::find(children->begin(), children->end(), child); | |
| 77 if (it != children->end()) { | |
| 78 children->erase(it); | |
| 79 ViewTreeNodePrivate(child).ClearParent(); | |
| 80 } | |
| 81 } | |
| 82 | |
| 83 class ScopedOrderChangedNotifier { | |
| 84 public: | |
| 85 ScopedOrderChangedNotifier(ViewTreeNode* node, | |
| 86 ViewTreeNode* relative_node, | |
| 87 OrderDirection direction) | |
| 88 : node_(node), | |
| 89 relative_node_(relative_node), | |
| 90 direction_(direction) { | |
| 91 FOR_EACH_OBSERVER( | |
| 92 ViewTreeNodeObserver, | |
| 93 *ViewTreeNodePrivate(node_).observers(), | |
| 94 OnNodeReordered(node_, | |
| 95 relative_node_, | |
| 96 direction_, | |
| 97 ViewTreeNodeObserver::DISPOSITION_CHANGING)); | |
| 98 | |
| 99 } | |
| 100 ~ScopedOrderChangedNotifier() { | |
| 101 FOR_EACH_OBSERVER( | |
| 102 ViewTreeNodeObserver, | |
| 103 *ViewTreeNodePrivate(node_).observers(), | |
| 104 OnNodeReordered(node_, | |
| 105 relative_node_, | |
| 106 direction_, | |
| 107 ViewTreeNodeObserver::DISPOSITION_CHANGED)); | |
| 108 } | |
| 109 | |
| 110 private: | |
| 111 ViewTreeNode* node_; | |
| 112 ViewTreeNode* relative_node_; | |
| 113 OrderDirection direction_; | |
| 114 | |
| 115 DISALLOW_COPY_AND_ASSIGN(ScopedOrderChangedNotifier); | |
| 116 }; | |
| 117 | |
| 118 // Returns true if the order actually changed. | |
| 119 bool ReorderImpl(ViewTreeNode::Children* children, | |
| 120 ViewTreeNode* node, | |
| 121 ViewTreeNode* relative, | |
| 122 OrderDirection direction) { | |
| 123 DCHECK(relative); | |
| 124 DCHECK_NE(node, relative); | |
| 125 DCHECK_EQ(node->parent(), relative->parent()); | |
| 126 | |
| 127 const size_t child_i = | |
| 128 std::find(children->begin(), children->end(), node) - children->begin(); | |
| 129 const size_t target_i = | |
| 130 std::find(children->begin(), children->end(), relative) - | |
| 131 children->begin(); | |
| 132 if ((direction == ORDER_ABOVE && child_i == target_i + 1) || | |
| 133 (direction == ORDER_BELOW && child_i + 1 == target_i)) { | |
| 134 return false; | |
| 135 } | |
| 136 | |
| 137 ScopedOrderChangedNotifier notifier(node, relative, direction); | |
| 138 | |
| 139 const size_t dest_i = | |
| 140 direction == ORDER_ABOVE ? | |
| 141 (child_i < target_i ? target_i : target_i + 1) : | |
| 142 (child_i < target_i ? target_i - 1 : target_i); | |
| 143 children->erase(children->begin() + child_i); | |
| 144 children->insert(children->begin() + dest_i, node); | |
| 145 | |
| 146 return true; | |
| 147 } | |
| 148 | |
| 149 class ScopedSetActiveViewNotifier { | |
| 150 public: | |
| 151 ScopedSetActiveViewNotifier(ViewTreeNode* node, | |
| 152 View* old_view, | |
| 153 View* new_view) | |
| 154 : node_(node), | |
| 155 old_view_(old_view), | |
| 156 new_view_(new_view) { | |
| 157 FOR_EACH_OBSERVER( | |
| 158 ViewTreeNodeObserver, | |
| 159 *ViewTreeNodePrivate(node).observers(), | |
| 160 OnNodeActiveViewChange(node_, | |
| 161 old_view_, | |
| 162 new_view_, | |
| 163 ViewTreeNodeObserver::DISPOSITION_CHANGING)); | |
| 164 } | |
| 165 ~ScopedSetActiveViewNotifier() { | |
| 166 FOR_EACH_OBSERVER( | |
| 167 ViewTreeNodeObserver, | |
| 168 *ViewTreeNodePrivate(node_).observers(), | |
| 169 OnNodeActiveViewChange(node_, | |
| 170 old_view_, | |
| 171 new_view_, | |
| 172 ViewTreeNodeObserver::DISPOSITION_CHANGED)); | |
| 173 } | |
| 174 | |
| 175 private: | |
| 176 ViewTreeNode* node_; | |
| 177 View* old_view_; | |
| 178 View* new_view_; | |
| 179 | |
| 180 DISALLOW_COPY_AND_ASSIGN(ScopedSetActiveViewNotifier); | |
| 181 }; | |
| 182 | |
| 183 class ScopedSetBoundsNotifier { | |
| 184 public: | |
| 185 ScopedSetBoundsNotifier(ViewTreeNode* node, | |
| 186 const gfx::Rect& old_bounds, | |
| 187 const gfx::Rect& new_bounds) | |
| 188 : node_(node), | |
| 189 old_bounds_(old_bounds), | |
| 190 new_bounds_(new_bounds) { | |
| 191 FOR_EACH_OBSERVER( | |
| 192 ViewTreeNodeObserver, | |
| 193 *ViewTreeNodePrivate(node_).observers(), | |
| 194 OnNodeBoundsChange(node_, | |
| 195 old_bounds_, | |
| 196 new_bounds_, | |
| 197 ViewTreeNodeObserver::DISPOSITION_CHANGING)); | |
| 198 } | |
| 199 ~ScopedSetBoundsNotifier() { | |
| 200 FOR_EACH_OBSERVER( | |
| 201 ViewTreeNodeObserver, | |
| 202 *ViewTreeNodePrivate(node_).observers(), | |
| 203 OnNodeBoundsChange(node_, | |
| 204 old_bounds_, | |
| 205 new_bounds_, | |
| 206 ViewTreeNodeObserver::DISPOSITION_CHANGED)); | |
| 207 } | |
| 208 | |
| 209 private: | |
| 210 ViewTreeNode* node_; | |
| 211 const gfx::Rect old_bounds_; | |
| 212 const gfx::Rect new_bounds_; | |
| 213 | |
| 214 DISALLOW_COPY_AND_ASSIGN(ScopedSetBoundsNotifier); | |
| 215 }; | |
| 216 | |
| 217 class ScopedDestructionNotifier { | |
| 218 public: | |
| 219 explicit ScopedDestructionNotifier(ViewTreeNode* node) | |
| 220 : node_(node) { | |
| 221 FOR_EACH_OBSERVER( | |
| 222 ViewTreeNodeObserver, | |
| 223 *ViewTreeNodePrivate(node_).observers(), | |
| 224 OnNodeDestroy(node_, ViewTreeNodeObserver::DISPOSITION_CHANGING)); | |
| 225 } | |
| 226 ~ScopedDestructionNotifier() { | |
| 227 FOR_EACH_OBSERVER( | |
| 228 ViewTreeNodeObserver, | |
| 229 *ViewTreeNodePrivate(node_).observers(), | |
| 230 OnNodeDestroy(node_, ViewTreeNodeObserver::DISPOSITION_CHANGED)); | |
| 231 } | |
| 232 | |
| 233 private: | |
| 234 ViewTreeNode* node_; | |
| 235 | |
| 236 DISALLOW_COPY_AND_ASSIGN(ScopedDestructionNotifier); | |
| 237 }; | |
| 238 | |
| 239 // Some operations are only permitted in the connection that created the node. | |
| 240 bool OwnsNode(ViewManager* manager, ViewTreeNode* node) { | |
| 241 return !manager || | |
| 242 static_cast<ViewManagerSynchronizer*>(manager)->OwnsNode(node->id()); | |
| 243 } | |
| 244 | |
| 245 } // namespace | |
| 246 | |
| 247 //////////////////////////////////////////////////////////////////////////////// | |
| 248 // ViewTreeNode, public: | |
| 249 | |
| 250 // static | |
| 251 ViewTreeNode* ViewTreeNode::Create(ViewManager* view_manager) { | |
| 252 ViewTreeNode* node = new ViewTreeNode(view_manager); | |
| 253 static_cast<ViewManagerSynchronizer*>(view_manager)->AddNode(node); | |
| 254 return node; | |
| 255 } | |
| 256 | |
| 257 void ViewTreeNode::Destroy() { | |
| 258 if (!OwnsNode(manager_, this)) | |
| 259 return; | |
| 260 | |
| 261 if (manager_) | |
| 262 static_cast<ViewManagerSynchronizer*>(manager_)->DestroyViewTreeNode(id_); | |
| 263 while (!children_.empty()) | |
| 264 children_.front()->Destroy(); | |
| 265 LocalDestroy(); | |
| 266 } | |
| 267 | |
| 268 void ViewTreeNode::SetBounds(const gfx::Rect& bounds) { | |
| 269 if (!OwnsNode(manager_, this)) | |
| 270 return; | |
| 271 | |
| 272 if (manager_) | |
| 273 static_cast<ViewManagerSynchronizer*>(manager_)->SetBounds(id_, bounds); | |
| 274 LocalSetBounds(bounds_, bounds); | |
| 275 } | |
| 276 | |
| 277 void ViewTreeNode::AddObserver(ViewTreeNodeObserver* observer) { | |
| 278 observers_.AddObserver(observer); | |
| 279 } | |
| 280 | |
| 281 void ViewTreeNode::RemoveObserver(ViewTreeNodeObserver* observer) { | |
| 282 observers_.RemoveObserver(observer); | |
| 283 } | |
| 284 | |
| 285 void ViewTreeNode::AddChild(ViewTreeNode* child) { | |
| 286 // TODO(beng): not necessarily valid to all connections, but possibly to the | |
| 287 // embeddee in an embedder-embeddee relationship. | |
| 288 if (manager_) | |
| 289 CHECK_EQ(ViewTreeNodePrivate(child).view_manager(), manager_); | |
| 290 LocalAddChild(child); | |
| 291 if (manager_) | |
| 292 static_cast<ViewManagerSynchronizer*>(manager_)->AddChild(child->id(), id_); | |
| 293 } | |
| 294 | |
| 295 void ViewTreeNode::RemoveChild(ViewTreeNode* child) { | |
| 296 // TODO(beng): not necessarily valid to all connections, but possibly to the | |
| 297 // embeddee in an embedder-embeddee relationship. | |
| 298 if (manager_) | |
| 299 CHECK_EQ(ViewTreeNodePrivate(child).view_manager(), manager_); | |
| 300 LocalRemoveChild(child); | |
| 301 if (manager_) { | |
| 302 static_cast<ViewManagerSynchronizer*>(manager_)->RemoveChild(child->id(), | |
| 303 id_); | |
| 304 } | |
| 305 } | |
| 306 | |
| 307 void ViewTreeNode::MoveToFront() { | |
| 308 Reorder(parent_->children_.back(), ORDER_ABOVE); | |
| 309 } | |
| 310 | |
| 311 void ViewTreeNode::MoveToBack() { | |
| 312 Reorder(parent_->children_.front(), ORDER_BELOW); | |
| 313 } | |
| 314 | |
| 315 void ViewTreeNode::Reorder(ViewTreeNode* relative, OrderDirection direction) { | |
| 316 if (!LocalReorder(relative, direction)) | |
| 317 return; | |
| 318 if (manager_) { | |
| 319 static_cast<ViewManagerSynchronizer*>(manager_)->Reorder(id_, | |
| 320 relative->id(), | |
| 321 direction); | |
| 322 } | |
| 323 } | |
| 324 | |
| 325 bool ViewTreeNode::Contains(ViewTreeNode* child) const { | |
| 326 if (manager_) | |
| 327 CHECK_EQ(ViewTreeNodePrivate(child).view_manager(), manager_); | |
| 328 for (ViewTreeNode* p = child->parent(); p; p = p->parent()) { | |
| 329 if (p == this) | |
| 330 return true; | |
| 331 } | |
| 332 return false; | |
| 333 } | |
| 334 | |
| 335 ViewTreeNode* ViewTreeNode::GetChildById(Id id) { | |
| 336 if (id == id_) | |
| 337 return this; | |
| 338 // TODO(beng): this could be improved depending on how we decide to own nodes. | |
| 339 Children::const_iterator it = children_.begin(); | |
| 340 for (; it != children_.end(); ++it) { | |
| 341 ViewTreeNode* node = (*it)->GetChildById(id); | |
| 342 if (node) | |
| 343 return node; | |
| 344 } | |
| 345 return NULL; | |
| 346 } | |
| 347 | |
| 348 void ViewTreeNode::SetActiveView(View* view) { | |
| 349 // TODO(beng): not necessarily valid to all connections, but possibly to the | |
| 350 // embeddee in an embedder-embeddee relationship. | |
| 351 if (manager_) | |
| 352 CHECK_EQ(ViewPrivate(view).view_manager(), manager_); | |
| 353 LocalSetActiveView(view); | |
| 354 if (manager_) { | |
| 355 static_cast<ViewManagerSynchronizer*>(manager_)->SetActiveView( | |
| 356 id_, active_view_->id()); | |
| 357 } | |
| 358 } | |
| 359 | |
| 360 void ViewTreeNode::SetFocus() { | |
| 361 if (manager_) | |
| 362 static_cast<ViewManagerSynchronizer*>(manager_)->SetFocus(id_); | |
| 363 } | |
| 364 | |
| 365 void ViewTreeNode::Embed(const String& url) { | |
| 366 static_cast<ViewManagerSynchronizer*>(manager_)->Embed(url, id_); | |
| 367 } | |
| 368 | |
| 369 //////////////////////////////////////////////////////////////////////////////// | |
| 370 // ViewTreeNode, protected: | |
| 371 | |
| 372 ViewTreeNode::ViewTreeNode() | |
| 373 : manager_(NULL), | |
| 374 id_(-1), | |
| 375 parent_(NULL), | |
| 376 active_view_(NULL) {} | |
| 377 | |
| 378 ViewTreeNode::~ViewTreeNode() { | |
| 379 ScopedDestructionNotifier notifier(this); | |
| 380 if (parent_) | |
| 381 parent_->LocalRemoveChild(this); | |
| 382 // TODO(beng): It'd be better to do this via a destruction observer in the | |
| 383 // synchronizer. | |
| 384 if (manager_) | |
| 385 static_cast<ViewManagerSynchronizer*>(manager_)->RemoveNode(id_); | |
| 386 } | |
| 387 | |
| 388 //////////////////////////////////////////////////////////////////////////////// | |
| 389 // ViewTreeNode, private: | |
| 390 | |
| 391 ViewTreeNode::ViewTreeNode(ViewManager* manager) | |
| 392 : manager_(manager), | |
| 393 id_(static_cast<ViewManagerSynchronizer*>( | |
| 394 manager_)->CreateViewTreeNode()), | |
| 395 parent_(NULL), | |
| 396 active_view_(NULL) {} | |
| 397 | |
| 398 void ViewTreeNode::LocalDestroy() { | |
| 399 delete this; | |
| 400 } | |
| 401 | |
| 402 void ViewTreeNode::LocalAddChild(ViewTreeNode* child) { | |
| 403 ScopedTreeNotifier notifier(child, child->parent(), this); | |
| 404 if (child->parent()) | |
| 405 RemoveChildImpl(child, &child->parent_->children_); | |
| 406 children_.push_back(child); | |
| 407 child->parent_ = this; | |
| 408 } | |
| 409 | |
| 410 void ViewTreeNode::LocalRemoveChild(ViewTreeNode* child) { | |
| 411 DCHECK_EQ(this, child->parent()); | |
| 412 ScopedTreeNotifier notifier(child, this, NULL); | |
| 413 RemoveChildImpl(child, &children_); | |
| 414 } | |
| 415 | |
| 416 bool ViewTreeNode::LocalReorder(ViewTreeNode* relative, | |
| 417 OrderDirection direction) { | |
| 418 return ReorderImpl(&parent_->children_, this, relative, direction); | |
| 419 } | |
| 420 | |
| 421 void ViewTreeNode::LocalSetActiveView(View* view) { | |
| 422 ScopedSetActiveViewNotifier notifier(this, active_view_, view); | |
| 423 if (active_view_) | |
| 424 ViewPrivate(active_view_).set_node(NULL); | |
| 425 active_view_ = view; | |
| 426 if (active_view_) | |
| 427 ViewPrivate(active_view_).set_node(this); | |
| 428 } | |
| 429 | |
| 430 void ViewTreeNode::LocalSetBounds(const gfx::Rect& old_bounds, | |
| 431 const gfx::Rect& new_bounds) { | |
| 432 DCHECK(old_bounds == bounds_); | |
| 433 ScopedSetBoundsNotifier notifier(this, old_bounds, new_bounds); | |
| 434 bounds_ = new_bounds; | |
| 435 } | |
| 436 | |
| 437 } // namespace view_manager | |
| 438 } // namespace mojo | |
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Chromium Code Reviews
Issue 338093008:
Client side name cleanup (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src