mirror of https://gitee.com/openkylin/kxmlgui.git
92 lines
3.9 KiB
Plaintext
92 lines
3.9 KiB
Plaintext
Bug with toolbars: a->saveState(); delete a; b->saveState(); delete b;
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will store wrong positions (index, offset and newline).
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When removing an xmlgui-client involves destroying toolbars, we need to save the
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whole set of toolbar positions of the mainwindow, into the xmlgui-client.
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Data structure:
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struct KToolBarPos {
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short int index;
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short int offset;
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bool newLine;
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};
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typedef QValueVector<KToolBarPos> KToolBarPosList;
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API:
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KToolBarPosList KMainWindow::toolBarPositionList() const;
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The remaining problem is to know when to call it:
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* when we know in advance that we'll be able to remove toolbars?
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(when creating the client we could remember if we created a toolbar and store
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that bit of information, to re-use it when removing the client again)
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* when removing the first toolbar (of a given client); then we need
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to differentiate between first and following toolbars
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* always, if fast enough? With tons of plugins that might not be a good idea.
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========== More long term
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Problems:
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* No ui_standards.rc merging for parts
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* Confusing tag names (MergeLocal vs DefineGroup) for similar features
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* Two different merging codes (DOM-tree merging for ui_standards, xmlguifactory merging
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between xmlguiclients).
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Solution:
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* Get rid of the custom DOM-tree merging code from kxmlguiclient (for ui_standards.rc),
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use the existing merging code from kxmlguifactory instead
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* MergeLocal and DefineGroup are renamed MergeGroup, and append= becomes equivalent to group=.
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* Action is renamed MergeAction, and uses a new kind of place holder
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(one that matches actions by name during merging)
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So ui_standards.rc needs to be turned into <MergeAction>s and <MergeGroup>s only.
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* This also means that it will be possible to have only merge tags (and custom items
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like separators and tearoffhandle etc.) in a container, in which case it should
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not appear in the GUI. For that, ContainerNode must be improved so that it supports
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having no real GUI container attached to it.
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Big problem here. This means not building a container until we find that it
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really has an action (and the other way round: deleting a container when
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removing its last action, as we do, but still keeping a ContainerNode around...)
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(A ContainerNode is destroyed when its owner guiclient is removed from the factory,
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no change here).
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* A new XMLGUIClient provides the ui_standards.rc XML. It has the same instance
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as the mainwindow's guiclient. It provides no actions. No problems, since it
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only has <Merge*> tags.
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But that new xmlguiclient will 'own' the containers, so KEditToolbar will
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give wrong information.
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=====>
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This means the following KEditToolbar improvement is necessary:
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(it's an almost unrelated and necessary change there anyway, usability-wise)
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It would use merging, to present a merged view of the toolbars
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When the user inserts an action to a toolbar, we know which client the action
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belongs to, so we know which XML file to modify.
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BUT if the user adds actions in non-contiguous positions, we need to
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create <DefineGroup name="client1_tmp1"> groups, so that the merging actually does
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what the user asked for (!!)
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This allows to get rid of the "toolbar <client>" combobox stuff, and just have
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a list of toolbars there.
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Implementation: it can do this by providing its own KXMLGUIBuilder, to a
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new factory. The guiclients would be wrapped in a KXMLGUIClientProxy,
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which would forward the action() and domElement() calls - because a client
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can be in only one factory at a time.
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This custom builder needs to know about action plugging too, we don't really want
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to call KAction::plug here. So this would be 'virtualized' (new virtual, in a new
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interface to keep BC, that by default calls plug, but does something else in
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kedittoolbar's builder).
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======
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Additional benefits:
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* Any XML file can use the new <MergeAction> feature to modify the way a
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child client (e.g. a part) is getting merged, without adding group attributes
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to the child client (useful for a binary-only one, e.g.)
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--
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David Faure <faure@kde.org>
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Simon Hausmann <hausmann@kde.org>
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