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      1 // Copyright 2015 PDFium 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 #ifndef TESTING_EMBEDDER_TEST_TIMER_HANDLING_DELEGATE_H_
      6 #define TESTING_EMBEDDER_TEST_TIMER_HANDLING_DELEGATE_H_
      7 
      8 #include <map>
      9 #include <string>
     10 #include <utility>
     11 #include <vector>
     12 
     13 #include "testing/embedder_test.h"
     14 #include "testing/test_support.h"
     15 
     16 class EmbedderTestTimerHandlingDelegate : public EmbedderTest::Delegate {
     17  public:
     18   struct AlertRecord {
     19     std::wstring message;
     20     std::wstring title;
     21     int type;
     22     int icon;
     23   };
     24 
     25   struct Timer {
     26     int id;
     27     int interval;
     28     TimerCallback fn;
     29   };
     30 
     31   int Alert(FPDF_WIDESTRING message,
     32             FPDF_WIDESTRING title,
     33             int type,
     34             int icon) override {
     35     alerts_.push_back(
     36         {GetPlatformWString(message), GetPlatformWString(title), type, icon});
     37     return 0;
     38   }
     39 
     40   int SetTimer(int msecs, TimerCallback fn) override {
     41     int id = fail_next_timer_ ? 0 : ++next_timer_id_;
     42     expiry_to_timer_map_.insert(
     43         std::pair<int, Timer>(msecs + fake_elapsed_msecs_, {id, msecs, fn}));
     44     fail_next_timer_ = false;
     45     return id;
     46   }
     47 
     48   void KillTimer(int id) override {
     49     for (auto iter = expiry_to_timer_map_.begin();
     50          iter != expiry_to_timer_map_.end(); ++iter) {
     51       if (iter->second.id == id) {
     52         expiry_to_timer_map_.erase(iter);
     53         break;
     54       }
     55     }
     56   }
     57 
     58   void AdvanceTime(int increment_msecs) {
     59     fake_elapsed_msecs_ += increment_msecs;
     60     while (1) {
     61       auto iter = expiry_to_timer_map_.begin();
     62       if (iter == expiry_to_timer_map_.end()) {
     63         break;
     64       }
     65       if (iter->first > fake_elapsed_msecs_) {
     66         break;
     67       }
     68       Timer t = iter->second;
     69       expiry_to_timer_map_.erase(iter);
     70       expiry_to_timer_map_.insert(
     71           std::pair<int, Timer>(fake_elapsed_msecs_ + t.interval, t));
     72       t.fn(t.id);  // Fire timer.
     73     }
     74   }
     75 
     76   const std::vector<AlertRecord>& GetAlerts() const { return alerts_; }
     77 
     78   void SetFailNextTimer() { fail_next_timer_ = true; }
     79 
     80  protected:
     81   std::multimap<int, Timer> expiry_to_timer_map_;  // Keyed by timeout.
     82   bool fail_next_timer_ = false;
     83   int next_timer_id_ = 0;
     84   int fake_elapsed_msecs_ = 0;
     85   std::vector<AlertRecord> alerts_;
     86 };
     87 
     88 #endif  // TESTING_EMBEDDER_TEST_TIMER_HANDLING_DELEGATE_H_
     89