9c7119fdc2
Remove it from the script info section and put it in its own section that isn't tracked by undo and make it not stringly typed. Removes the need for the gross hack where changes are slipped in just before saving to circumvent the undo system, cuts down on the uses of string literals to identify fields, and probably improves performance a little.
117 lines
4.7 KiB
C++
117 lines
4.7 KiB
C++
// Copyright (c) 2010, Niels Martin Hansen
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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//
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// * Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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// * Neither the name of the Aegisub Group nor the names of its contributors
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// may be used to endorse or promote products derived from this software
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// without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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//
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// Aegisub Project http://www.aegisub.org/
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#include <libaegisub/signal.h>
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#include <set>
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#include <vector>
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class AssDialogue;
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typedef std::set<AssDialogue *> Selection;
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namespace agi { struct Context; }
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class SelectionController {
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agi::signal::Signal<AssDialogue *> AnnounceActiveLineChanged;
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agi::signal::Signal<> AnnounceSelectedSetChanged;
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agi::Context *context;
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Selection selection; ///< Currently selected lines
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AssDialogue *active_line = nullptr; ///< The currently active line or 0 if none
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agi::signal::Connection open_connection;
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void OnSubtitlesOpen();
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void OnSubtitlesSave();
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public:
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SelectionController(agi::Context *context);
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/// @brief Change the active line
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/// @param new_line Subtitle line to become the new active line
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///
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/// The active line may be changed to nullptr, in which case there is no longer an
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/// active line.
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///
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/// Calling this method should only cause a change notification to be sent if
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/// the active line was actually changed.
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///
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/// This method must not affect the selected set.
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void SetActiveLine(AssDialogue *new_line);
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/// @brief Obtain the active line
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/// @return The active line or nullptr if there is none
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AssDialogue *GetActiveLine() const { return active_line; }
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/// @brief Change the selected set
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/// @param new_selection The set of subtitle lines to become the new selected set
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///
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/// Implementations must either completely change the selected set to the new
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/// set provided, or not change the selected set at all. Partial changes are
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/// not allowed.
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///
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/// If no change happens to the selected set, whether because it was refused or
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/// because the new set was identical to the old set, no change notification may
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/// be sent.
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void SetSelectedSet(Selection new_selection);
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/// @brief Obtain the selected set
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/// @return The selected set
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Selection const& GetSelectedSet() const { return selection; }
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/// Get the selection sorted by row number
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std::vector<AssDialogue *> GetSortedSelection() const;
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/// @brief Set both the selected set and active line
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/// @param new_line Subtitle line to become the new active line
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/// @param new_selection The set of subtitle lines to become the new selected set
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///
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/// This sets both the active line and selected set before announcing the
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/// change to either of them, and is guaranteed to announce the active line
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/// change before the selection change.
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void SetSelectionAndActive(Selection new_selection, AssDialogue *new_line);
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/// @brief Change the active line to the next in sequence
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///
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/// If there is no logical next line in sequence, no change happens. This should
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/// also reset the selected set to consist of exactly the active line, if the
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/// active line was changed.
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void NextLine();
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/// @brief Change the active line to the previous in sequence
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///
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/// If there is no logical previous line in sequence, no change happens. This
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/// should also reset the selected set to consist of exactly the active line, if
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/// the active line was changed.
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void PrevLine();
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DEFINE_SIGNAL_ADDERS(AnnounceSelectedSetChanged, AddSelectionListener)
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DEFINE_SIGNAL_ADDERS(AnnounceActiveLineChanged, AddActiveLineListener)
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};
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