src/ui/v2/src/view_unittest.cc

   1 // Copyright (c) 2013 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 "ui/v2/public/view.h"
   6
   7 #include "base/logging.h"
   8 #include "testing/gtest/include/gtest/gtest.h"
   9 #include "ui/compositor/layer.h"
  10 #include "ui/compositor/layer_type.h"
  11
  12 namespace v2 {
  13
  14 // View ------------------------------------------------------------------------
  15
  16 typedef testing::Test ViewTest;
  17
  18 TEST_F(ViewTest, AddChild) {
  19   View v1;
  20   View* v11 = new View;
  21   v1.AddChild(v11);
  22   EXPECT_EQ(1U, v1.children().size());
  23 }
  24
  25 TEST_F(ViewTest, RemoveChild) {
  26   View v1;
  27   View* v11 = new View;
  28   v1.AddChild(v11);
  29   EXPECT_EQ(1U, v1.children().size());
  30   v1.RemoveChild(v11);
  31   EXPECT_EQ(0U, v1.children().size());
  32 }
  33
  34 TEST_F(ViewTest, Reparent) {
  35   View v1;
  36   View v2;
  37   View* v11 = new View;
  38   v1.AddChild(v11);
  39   EXPECT_EQ(1U, v1.children().size());
  40   v2.AddChild(v11);
  41   EXPECT_EQ(1U, v2.children().size());
  42   EXPECT_EQ(0U, v1.children().size());
  43 }
  44
  45 TEST_F(ViewTest, Contains) {
  46   View v1;
  47
  48   // Direct descendant.
  49   View* v11 = new View;
  50   v1.AddChild(v11);
  51   EXPECT_TRUE(v1.Contains(v11));
  52
  53   // Indirect descendant.
  54   View* v111 = new View;
  55   v11->AddChild(v111);
  56   EXPECT_TRUE(v1.Contains(v111));
  57 }
  58
  59 TEST_F(ViewTest, Stacking) {
  60   View v1;
  61   View* v11 = new View;
  62   View* v12 = new View;
  63   View* v13 = new View;
  64   v1.AddChild(v11);
  65   v1.AddChild(v12);
  66   v1.AddChild(v13);
  67
  68   // Order: v11, v12, v13
  69   EXPECT_EQ(3U, v1.children().size());
  70   EXPECT_EQ(v11, v1.children().front());
  71   EXPECT_EQ(v13, v1.children().back());
  72
  73   // Move v11 to front.
  74   // Resulting order: v12, v13, v11
  75   v1.StackChildAtTop(v11);
  76   EXPECT_EQ(v12, v1.children().front());
  77   EXPECT_EQ(v11, v1.children().back());
  78
  79   // Move v11 to back.
  80   // Resulting order: v11, v12, v13
  81   v1.StackChildAtBottom(v11);
  82   EXPECT_EQ(v11, v1.children().front());
  83   EXPECT_EQ(v13, v1.children().back());
  84
  85   // Move v11 above v12.
  86   // Resulting order: v12. v11, v13
  87   v1.StackChildAbove(v11, v12);
  88   EXPECT_EQ(v12, v1.children().front());
  89   EXPECT_EQ(v13, v1.children().back());
  90
  91   // Move v11 below v12.
  92   // Resulting order: v11, v12, v13
  93   v1.StackChildBelow(v11, v12);
  94   EXPECT_EQ(v11, v1.children().front());
  95   EXPECT_EQ(v13, v1.children().back());
  96 }
  97
  98 TEST_F(ViewTest, Layer) {
  99   View v1;
 100   v1.CreateLayer(ui::LAYER_NOT_DRAWN);
 101   EXPECT_TRUE(v1.HasLayer());
 102   v1.DestroyLayer();
 103   EXPECT_FALSE(v1.HasLayer());
 104
 105   v1.CreateLayer(ui::LAYER_NOT_DRAWN);
 106   scoped_ptr<ui::Layer>(v1.AcquireLayer());
 107   // Acquiring the layer transfers ownership to the scoped_ptr above, so this
 108   // test passes if it doesn't crash.
 109 }
 110
 111 // ViewObserver ----------------------------------------------------------------
 112
 113 typedef testing::Test ViewObserverTest;
 114
 115 bool TreeChangeParamsMatch(const ViewObserver::TreeChangeParams& lhs,
 116                            const ViewObserver::TreeChangeParams& rhs) {
 117   return lhs.target == rhs.target &&  lhs.old_parent == rhs.old_parent &&
 118       lhs.new_parent == rhs.new_parent && lhs.receiver == rhs.receiver &&
 119       lhs.phase == rhs.phase;
 120 }
 121
 122 class TreeChangeObserver : public ViewObserver {
 123  public:
 124   explicit TreeChangeObserver(View* observee) : observee_(observee) {
 125     observee_->AddObserver(this);
 126   }
 127   virtual ~TreeChangeObserver() {
 128     observee_->RemoveObserver(this);
 129   }
 130
 131   void Reset() {
 132       received_params_.clear();
 133   }
 134
 135   const std::vector<TreeChangeParams>& received_params() {
 136     return received_params_;
 137   }
 138
 139  private:
 140   // Overridden from ViewObserver:
 141   virtual void OnViewTreeChange(const TreeChangeParams& params) OVERRIDE {
 142     received_params_.push_back(params);
 143   }
 144
 145   View* observee_;
 146   std::vector<TreeChangeParams> received_params_;
 147
 148   DISALLOW_COPY_AND_ASSIGN(TreeChangeObserver);
 149 };
 150
 151 // Adds/Removes v11 to v1.
 152 TEST_F(ViewObserverTest, TreeChange_SimpleAddRemove) {
 153   View v1;
 154   TreeChangeObserver o1(&v1);
 155   EXPECT_TRUE(o1.received_params().empty());
 156
 157   View v11;
 158   v11.set_owned_by_parent(false);
 159   TreeChangeObserver o11(&v11);
 160   EXPECT_TRUE(o11.received_params().empty());
 161
 162   // Add.
 163
 164   v1.AddChild(&v11);
 165
 166   EXPECT_EQ(1U, o1.received_params().size());
 167   ViewObserver::TreeChangeParams p1;
 168   p1.target = &v11;
 169   p1.receiver = &v1;
 170   p1.old_parent = NULL;
 171   p1.new_parent = &v1;
 172   p1.phase = ViewObserver::DISPOSITION_CHANGED;
 173   EXPECT_TRUE(TreeChangeParamsMatch(p1, o1.received_params().back()));
 174
 175   EXPECT_EQ(2U, o11.received_params().size());
 176   ViewObserver::TreeChangeParams p11 = p1;
 177   p11.receiver = &v11;
 178   p11.phase = ViewObserver::DISPOSITION_CHANGING;
 179   EXPECT_TRUE(TreeChangeParamsMatch(p11, o11.received_params().front()));
 180   p11.phase = ViewObserver::DISPOSITION_CHANGED;
 181   EXPECT_TRUE(TreeChangeParamsMatch(p11, o11.received_params().back()));
 182
 183   o1.Reset();
 184   o11.Reset();
 185   EXPECT_TRUE(o1.received_params().empty());
 186   EXPECT_TRUE(o11.received_params().empty());
 187
 188   // Remove.
 189
 190   v1.RemoveChild(&v11);
 191
 192   EXPECT_EQ(1U, o1.received_params().size());
 193   p1.target = &v11;
 194   p1.receiver = &v1;
 195   p1.old_parent = &v1;
 196   p1.new_parent = NULL;
 197   p1.phase = ViewObserver::DISPOSITION_CHANGING;
 198   EXPECT_TRUE(TreeChangeParamsMatch(p1, o1.received_params().back()));
 199
 200   EXPECT_EQ(2U, o11.received_params().size());
 201   p11 = p1;
 202   p11.receiver = &v11;
 203   EXPECT_TRUE(TreeChangeParamsMatch(p11, o11.received_params().front()));
 204   p11.phase = ViewObserver::DISPOSITION_CHANGED;
 205   EXPECT_TRUE(TreeChangeParamsMatch(p11, o11.received_params().back()));
 206 }
 207
 208 // Creates these two trees:
 209 // v1
 210 //  +- v11
 211 // v111
 212 //  +- v1111
 213 //  +- v1112
 214 // Then adds/removes v111 from v11.
 215 TEST_F(ViewObserverTest, TreeChange_NestedAddRemove) {
 216   View v1, v11, v111, v1111, v1112;
 217
 218   // Root tree.
 219   v11.set_owned_by_parent(false);
 220   v1.AddChild(&v11);
 221
 222   // Tree to be attached.
 223   v111.set_owned_by_parent(false);
 224   v1111.set_owned_by_parent(false);
 225   v111.AddChild(&v1111);
 226   v1112.set_owned_by_parent(false);
 227   v111.AddChild(&v1112);
 228
 229   TreeChangeObserver o1(&v1), o11(&v11), o111(&v111), o1111(&v1111),
 230       o1112(&v1112);
 231   ViewObserver::TreeChangeParams p1, p11, p111, p1111, p1112;
 232
 233   // Add.
 234
 235   v11.AddChild(&v111);
 236
 237   EXPECT_EQ(1U, o1.received_params().size());
 238   p1.target = &v111;
 239   p1.receiver = &v1;
 240   p1.old_parent = NULL;
 241   p1.new_parent = &v11;
 242   p1.phase = ViewObserver::DISPOSITION_CHANGED;
 243   EXPECT_TRUE(TreeChangeParamsMatch(p1, o1.received_params().back()));
 244
 245   EXPECT_EQ(1U, o11.received_params().size());
 246   p11 = p1;
 247   p11.receiver = &v11;
 248   EXPECT_TRUE(TreeChangeParamsMatch(p11, o11.received_params().back()));
 249
 250   EXPECT_EQ(2U, o111.received_params().size());
 251   p111 = p11;
 252   p111.receiver = &v111;
 253   p111.phase = ViewObserver::DISPOSITION_CHANGING;
 254   EXPECT_TRUE(TreeChangeParamsMatch(p111, o111.received_params().front()));
 255   p111.phase = ViewObserver::DISPOSITION_CHANGED;
 256   EXPECT_TRUE(TreeChangeParamsMatch(p111, o111.received_params().back()));
 257
 258   EXPECT_EQ(2U, o1111.received_params().size());
 259   p1111 = p111;
 260   p1111.receiver = &v1111;
 261   p1111.phase = ViewObserver::DISPOSITION_CHANGING;
 262   EXPECT_TRUE(TreeChangeParamsMatch(p1111, o1111.received_params().front()));
 263   p1111.phase = ViewObserver::DISPOSITION_CHANGED;
 264   EXPECT_TRUE(TreeChangeParamsMatch(p1111, o1111.received_params().back()));
 265
 266   EXPECT_EQ(2U, o1112.received_params().size());
 267   p1112 = p111;
 268   p1112.receiver = &v1112;
 269   p1112.phase = ViewObserver::DISPOSITION_CHANGING;
 270   EXPECT_TRUE(TreeChangeParamsMatch(p1112, o1112.received_params().front()));
 271   p1112.phase = ViewObserver::DISPOSITION_CHANGED;
 272   EXPECT_TRUE(TreeChangeParamsMatch(p1112, o1112.received_params().back()));
 273
 274   // Remove.
 275   o1.Reset();
 276   o11.Reset();
 277   o111.Reset();
 278   o1111.Reset();
 279   o1112.Reset();
 280   EXPECT_TRUE(o1.received_params().empty());
 281   EXPECT_TRUE(o11.received_params().empty());
 282   EXPECT_TRUE(o111.received_params().empty());
 283   EXPECT_TRUE(o1111.received_params().empty());
 284   EXPECT_TRUE(o1112.received_params().empty());
 285
 286   v11.RemoveChild(&v111);
 287
 288   EXPECT_EQ(1U, o1.received_params().size());
 289   p1.target = &v111;
 290   p1.receiver = &v1;
 291   p1.old_parent = &v11;
 292   p1.new_parent = NULL;
 293   p1.phase = ViewObserver::DISPOSITION_CHANGING;
 294   EXPECT_TRUE(TreeChangeParamsMatch(p1, o1.received_params().back()));
 295
 296   EXPECT_EQ(1U, o11.received_params().size());
 297   p11 = p1;
 298   p11.receiver = &v11;
 299   EXPECT_TRUE(TreeChangeParamsMatch(p11, o11.received_params().back()));
 300
 301   EXPECT_EQ(2U, o111.received_params().size());
 302   p111 = p11;
 303   p111.receiver = &v111;
 304   p111.phase = ViewObserver::DISPOSITION_CHANGING;
 305   EXPECT_TRUE(TreeChangeParamsMatch(p111, o111.received_params().front()));
 306   p111.phase = ViewObserver::DISPOSITION_CHANGED;
 307   EXPECT_TRUE(TreeChangeParamsMatch(p111, o111.received_params().back()));
 308
 309   EXPECT_EQ(2U, o1111.received_params().size());
 310   p1111 = p111;
 311   p1111.receiver = &v1111;
 312   p1111.phase = ViewObserver::DISPOSITION_CHANGING;
 313   EXPECT_TRUE(TreeChangeParamsMatch(p1111, o1111.received_params().front()));
 314   p1111.phase = ViewObserver::DISPOSITION_CHANGED;
 315   EXPECT_TRUE(TreeChangeParamsMatch(p1111, o1111.received_params().back()));
 316
 317   EXPECT_EQ(2U, o1112.received_params().size());
 318   p1112 = p111;
 319   p1112.receiver = &v1112;
 320   p1112.phase = ViewObserver::DISPOSITION_CHANGING;
 321   EXPECT_TRUE(TreeChangeParamsMatch(p1112, o1112.received_params().front()));
 322   p1112.phase = ViewObserver::DISPOSITION_CHANGED;
 323   EXPECT_TRUE(TreeChangeParamsMatch(p1112, o1112.received_params().back()));
 324 }
 325
 326 TEST_F(ViewObserverTest, TreeChange_Reparent) {
 327   View v1, v11, v12, v111;
 328   v11.set_owned_by_parent(false);
 329   v111.set_owned_by_parent(false);
 330   v12.set_owned_by_parent(false);
 331   v1.AddChild(&v11);
 332   v1.AddChild(&v12);
 333   v11.AddChild(&v111);
 334
 335   TreeChangeObserver o1(&v1), o11(&v11), o12(&v12), o111(&v111);
 336
 337   // Reparent.
 338   v12.AddChild(&v111);
 339
 340   // v1 (root) should see both changing and changed notifications.
 341   EXPECT_EQ(2U, o1.received_params().size());
 342   ViewObserver::TreeChangeParams p1;
 343   p1.target = &v111;
 344   p1.receiver = &v1;
 345   p1.old_parent = &v11;
 346   p1.new_parent = &v12;
 347   p1.phase = ViewObserver::DISPOSITION_CHANGING;
 348   EXPECT_TRUE(TreeChangeParamsMatch(p1, o1.received_params().front()));
 349   p1.phase = ViewObserver::DISPOSITION_CHANGED;
 350   EXPECT_TRUE(TreeChangeParamsMatch(p1, o1.received_params().back()));
 351
 352   // v11 should see changing notifications.
 353   EXPECT_EQ(1U, o11.received_params().size());
 354   ViewObserver::TreeChangeParams p11;
 355   p11 = p1;
 356   p11.receiver = &v11;
 357   p11.phase = ViewObserver::DISPOSITION_CHANGING;
 358   EXPECT_TRUE(TreeChangeParamsMatch(p11, o11.received_params().back()));
 359
 360   // v12 should see changed notifications.
 361   EXPECT_EQ(1U, o12.received_params().size());
 362   ViewObserver::TreeChangeParams p12;
 363   p12 = p1;
 364   p12.receiver = &v12;
 365   p12.phase = ViewObserver::DISPOSITION_CHANGED;
 366   EXPECT_TRUE(TreeChangeParamsMatch(p12, o12.received_params().back()));
 367
 368   // v111 should see both changing and changed notifications.
 369   EXPECT_EQ(2U, o111.received_params().size());
 370   ViewObserver::TreeChangeParams p111;
 371   p111 = p1;
 372   p111.receiver = &v111;
 373   p111.phase = ViewObserver::DISPOSITION_CHANGING;
 374   EXPECT_TRUE(TreeChangeParamsMatch(p111, o111.received_params().front()));
 375   p111.phase = ViewObserver::DISPOSITION_CHANGED;
 376   EXPECT_TRUE(TreeChangeParamsMatch(p111, o111.received_params().back()));
 377 }
 378
 379 class VisibilityObserver : public ViewObserver {
 380  public:
 381   typedef std::pair<ViewObserver::DispositionChangePhase, bool> LogEntry;
 382   typedef std::vector<LogEntry> LogEntries;
 383
 384   VisibilityObserver(View* view) : view_(view) {
 385     view_->AddObserver(this);
 386   }
 387   virtual ~VisibilityObserver() {
 388     view_->RemoveObserver(this);
 389   }
 390
 391   const LogEntries& log_entries() const { return log_entries_; }
 392
 393  private:
 394   // Overridden from ViewObserver:
 395   virtual void OnViewVisibilityChange(
 396       View* view,
 397       ViewObserver::DispositionChangePhase phase) OVERRIDE {
 398     DCHECK_EQ(view_, view);
 399     log_entries_.push_back(std::make_pair(phase, view->visible()));
 400   }
 401
 402   View* view_;
 403   LogEntries log_entries_;
 404
 405   DISALLOW_COPY_AND_ASSIGN(VisibilityObserver);
 406 };
 407
 408 TEST_F(ViewObserverTest, VisibilityChange) {
 409   View v1;  // Starts out visible.
 410
 411   VisibilityObserver o1(&v1);
 412
 413   v1.SetVisible(false);
 414
 415   EXPECT_EQ(2U, o1.log_entries().size());
 416   EXPECT_EQ(ViewObserver::DISPOSITION_CHANGING, o1.log_entries().front().first);
 417   EXPECT_EQ(o1.log_entries().front().second, true);
 418   EXPECT_EQ(ViewObserver::DISPOSITION_CHANGED, o1.log_entries().back().first);
 419   EXPECT_EQ(o1.log_entries().back().second, false);
 420 }
 421
 422 class BoundsObserver : public ViewObserver {
 423  public:
 424   typedef std::pair<gfx::Rect, gfx::Rect> BoundsChange;
 425   typedef std::vector<BoundsChange> BoundsChanges;
 426
 427   explicit BoundsObserver(View* view) : view_(view) {
 428     view_->AddObserver(this);
 429   }
 430   virtual ~BoundsObserver() {
 431     view_->RemoveObserver(this);
 432   }
 433
 434   const BoundsChanges& bounds_changes() const { return bounds_changes_; }
 435
 436  private:
 437   virtual void OnViewBoundsChanged(View* view,
 438                                   const gfx::Rect& old_bounds,
 439                                   const gfx::Rect& new_bounds) OVERRIDE {
 440     DCHECK_EQ(view_, view);
 441     bounds_changes_.push_back(std::make_pair(old_bounds, new_bounds));
 442   }
 443
 444   View* view_;
 445   BoundsChanges bounds_changes_;
 446
 447   DISALLOW_COPY_AND_ASSIGN(BoundsObserver);
 448 };
 449
 450 TEST_F(ViewObserverTest, BoundsChanged) {
 451   View v1;
 452   BoundsObserver o1(&v1);
 453
 454   gfx::Rect new_bounds(0, 0, 10, 10);
 455
 456   v1.SetBounds(new_bounds);
 457   EXPECT_EQ(1U, o1.bounds_changes().size());
 458   EXPECT_EQ(gfx::Rect(), o1.bounds_changes().front().first);
 459   EXPECT_EQ(new_bounds, o1.bounds_changes().front().second);
 460 }
 461
 462 }  // namespace v2