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1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- |
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2 * |
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3 * This Source Code Form is subject to the terms of the Mozilla Public |
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4 * License, v. 2.0. If a copy of the MPL was not distributed with this |
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5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
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6 |
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7 |
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8 |
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9 |
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10 #ifndef nsComposerCommandsUpdater_h__ |
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11 #define nsComposerCommandsUpdater_h__ |
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12 |
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13 #include "nsCOMPtr.h" // for already_AddRefed, nsCOMPtr |
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14 #include "nsIDocumentStateListener.h" |
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15 #include "nsISelectionListener.h" |
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16 #include "nsISupportsImpl.h" // for NS_DECL_ISUPPORTS |
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17 #include "nsITimer.h" // for NS_DECL_NSITIMERCALLBACK, etc |
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18 #include "nsITransactionListener.h" // for nsITransactionListener |
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19 #include "nsIWeakReferenceUtils.h" // for nsWeakPtr |
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20 #include "nscore.h" // for NS_IMETHOD, nsresult, etc |
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21 |
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22 class nsIDOMWindow; |
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23 class nsITransaction; |
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24 class nsITransactionManager; |
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25 class nsPICommandUpdater; |
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26 |
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27 class nsComposerCommandsUpdater : public nsISelectionListener, |
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28 public nsIDocumentStateListener, |
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29 public nsITransactionListener, |
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30 public nsITimerCallback |
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31 { |
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32 public: |
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33 |
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34 nsComposerCommandsUpdater(); |
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35 virtual ~nsComposerCommandsUpdater(); |
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36 |
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37 // nsISupports |
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38 NS_DECL_ISUPPORTS |
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39 |
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40 // nsISelectionListener |
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41 NS_DECL_NSISELECTIONLISTENER |
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42 |
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43 // nsIDocumentStateListener |
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44 NS_DECL_NSIDOCUMENTSTATELISTENER |
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45 |
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46 // nsITimerCallback interfaces |
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47 NS_DECL_NSITIMERCALLBACK |
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48 |
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49 /** nsITransactionListener interfaces |
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50 */ |
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51 NS_IMETHOD WillDo(nsITransactionManager *aManager, nsITransaction *aTransaction, bool *aInterrupt); |
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52 NS_IMETHOD DidDo(nsITransactionManager *aManager, nsITransaction *aTransaction, nsresult aDoResult); |
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53 NS_IMETHOD WillUndo(nsITransactionManager *aManager, nsITransaction *aTransaction, bool *aInterrupt); |
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54 NS_IMETHOD DidUndo(nsITransactionManager *aManager, nsITransaction *aTransaction, nsresult aUndoResult); |
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55 NS_IMETHOD WillRedo(nsITransactionManager *aManager, nsITransaction *aTransaction, bool *aInterrupt); |
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56 NS_IMETHOD DidRedo(nsITransactionManager *aManager, nsITransaction *aTransaction, nsresult aRedoResult); |
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57 NS_IMETHOD WillBeginBatch(nsITransactionManager *aManager, bool *aInterrupt); |
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58 NS_IMETHOD DidBeginBatch(nsITransactionManager *aManager, nsresult aResult); |
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59 NS_IMETHOD WillEndBatch(nsITransactionManager *aManager, bool *aInterrupt); |
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60 NS_IMETHOD DidEndBatch(nsITransactionManager *aManager, nsresult aResult); |
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61 NS_IMETHOD WillMerge(nsITransactionManager *aManager, nsITransaction *aTopTransaction, |
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62 nsITransaction *aTransactionToMerge, bool *aInterrupt); |
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63 NS_IMETHOD DidMerge(nsITransactionManager *aManager, nsITransaction *aTopTransaction, |
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64 nsITransaction *aTransactionToMerge, |
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65 bool aDidMerge, nsresult aMergeResult); |
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66 |
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67 |
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68 nsresult Init(nsIDOMWindow* aDOMWindow); |
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69 |
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70 protected: |
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71 |
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72 enum { |
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73 eStateUninitialized = -1, |
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74 eStateOff = false, |
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75 eStateOn = true |
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76 }; |
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77 |
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78 bool SelectionIsCollapsed(); |
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79 nsresult UpdateDirtyState(bool aNowDirty); |
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80 nsresult UpdateOneCommand(const char* aCommand); |
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81 nsresult UpdateCommandGroup(const nsAString& aCommandGroup); |
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82 |
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83 already_AddRefed<nsPICommandUpdater> GetCommandUpdater(); |
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84 |
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85 nsresult PrimeUpdateTimer(); |
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86 void TimerCallback(); |
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87 nsCOMPtr<nsITimer> mUpdateTimer; |
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88 |
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89 nsWeakPtr mDOMWindow; |
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90 nsWeakPtr mDocShell; |
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91 int8_t mDirtyState; |
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92 int8_t mSelectionCollapsed; |
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93 bool mFirstDoOfFirstUndo; |
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94 |
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95 |
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96 }; |
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97 |
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98 extern "C" nsresult NS_NewComposerCommandsUpdater(nsISelectionListener** aInstancePtrResult); |
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99 |
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100 |
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101 #endif // nsComposerCommandsUpdater_h__ |