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New helper lfun ifrelatives

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This executes a command only if a buffer has either a master or children

Helps to disable master-related items in the UI
This commit is contained in:
Juergen Spitzmueller 2020-01-02 14:09:24 +01:00
parent 3f7b8db1b1
commit dc41c1f6df
4 changed files with 42 additions and 0 deletions
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2
lib/RELEASE-NOTES
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@ -69,6 +69,8 @@
* export-cancel: Used to cancel background export processes.
* ifrelatives is a helper function to check whether a buffer has a master or children.
* master-buffer-forall executes an lfun in the master and all children of a document.
* paragraph-select is a new convenience function to select the paragraph

1
src/FuncCode.h
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@ -489,6 +489,7 @@ enum FuncCode
// 380
LFUN_BUFFER_RESET_EXPORT, // spitz 20191226
LFUN_MASTER_BUFFER_FORALL, // spitz 20191231
LFUN_IF_RELATIVES, // spitz 20200102
LFUN_LASTACTION // end of the table
};

13
src/LyXAction.cpp
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@ -1923,6 +1923,19 @@ void LyXAction::init()
*/
{ LFUN_ICON_SIZE, "icon-size", NoBuffer, Buffer },
/*!
* \var lyx::FuncCode lyx::LFUN_IF_RELATIVES
* \li Action: Helper function for master-related actions
* \li Notion: In a buffer, the function will be disabled if the buffer
* has no master or children. It thus allows to enable
* actions only in documents with master/children
* \li Syntax: ifrelatives <ACTION>
* \li Origin: spitz, 2 January 2020
* \endvar
*/
{ LFUN_IF_RELATIVES, "ifrelatives", Noop, Buffer },
/*!
* \var lyx::FuncCode lyx::LFUN_INDEX_INSERT
* \li Action: Inserts Index entry.

26
src/frontends/qt/GuiApplication.cpp
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@ -1310,6 +1310,20 @@ bool GuiApplication::getStatus(FuncRequest const & cmd, FuncStatus & flag) const
break;
}
case LFUN_IF_RELATIVES: {
string const lfun = to_utf8(cmd.argument());
BufferView const * bv =
current_view_ ? current_view_->currentBufferView() : nullptr;
if (!bv || (bv->buffer().parent() == nullptr && !bv->buffer().hasChildren())) {
enable = false;
break;
}
FuncRequest func(lyxaction.lookupFunc(lfun));
func.setOrigin(cmd.origin());
flag = getStatus(func);
break;
}
case LFUN_CURSOR_FOLLOWS_SCROLLBAR_TOGGLE:
case LFUN_REPEAT:
case LFUN_PREFERENCES_SAVE:
@ -2051,6 +2065,18 @@ void GuiApplication::dispatch(FuncRequest const & cmd, DispatchResult & dr)
break;
}
case LFUN_IF_RELATIVES: {
string const lfun = to_utf8(cmd.argument());
FuncRequest func(lyxaction.lookupFunc(lfun));
func.setOrigin(cmd.origin());
FuncStatus const stat = getStatus(func);
if (stat.enabled()) {
dispatch(func);
break;
}
break;
}
case LFUN_PREFERENCES_SAVE:
lyxrc.write(support::makeAbsPath("preferences",
package().user_support().absFileName()), false);