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566 lines
18 KiB
XML
566 lines
18 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<fpdoc-descriptions>
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<package name="LazControls">
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<module name="ExtendedNotebook">
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<short>
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Contains an extended notebook with support for dragging and dropping tabs on
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the control.
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</short>
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<descr>
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<p>
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<file>ExtendedNotebook.pas</file> contains classes and types used to
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implement an extended notebook control. It provides support for dragging and
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dropping tabs on the control.
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</p>
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<p>
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This file is part of the <file>LazControls</file> package,
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</p>
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</descr>
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<!-- unresolved external references -->
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<element name="Classes"/>
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<element name="SysUtils"/>
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<element name="Math"/>
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<element name="LCLIntf"/>
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<element name="LCLType"/>
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<element name="LMessages"/>
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<element name="Controls"/>
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<element name="ComCtrls"/>
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<element name="LCLProc"/>
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<element name="TNotebookTabDragDropEvent">
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<short>
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Specifies an event handler signalled for a drag/drop event on a notebook tab.
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</short>
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<descr>
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<p>
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TNotebookTabDragDropEvent is the type used for the OnTabDragDropEx property
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in TExtendedNotebook. It is used to perform actions needed when a tab on a
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TExtendedNotebook control is moved to a new location using drag and drop.
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</p>
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<p>
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An application must implement and assign an object method which uses this
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signature to respond to the event notification. It is signalled from the
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DragDrop method in TExtendedNotebook, and occurs after its OnTabDragOverEx
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event.
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</p>
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</descr>
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<seealso>
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<link id="TExtendedNotebook.OnTabDragDropEx"/>
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<link id="TExtendedNotebook.OnTabDragOverEx"/>
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<link id="TExtendedNotebook.DragDrop"/>
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</seealso>
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</element>
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<element name="TNotebookTabDragDropEvent.Sender">
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<short>Object for the notification.</short>
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</element>
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<element name="TNotebookTabDragDropEvent.Source">
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<short>Control where the drag operation originated.</short>
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</element>
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<element name="TNotebookTabDragDropEvent.OldIndex">
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<short>Original ordinal position for the dragged tab.</short>
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</element>
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<element name="TNotebookTabDragDropEvent.NewIndex">
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<short>New ordinal position for the dragged tab.</short>
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</element>
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<element name="TNotebookTabDragDropEvent.CopyDrag">
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<short>
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<b>True</b> if the Ctrl key is pressed during the drag and drop operation.
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</short>
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</element>
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<element name="TNotebookTabDragDropEvent.Done">
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<short><b>True</b> if the tab can be moved to the new location.</short>
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</element>
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<element name="TNotebookTabDragOverEvent">
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<short>
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Specifies an event handler signalled when a dragged tab is over a notebook
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control.
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</short>
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<descr/>
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<seealso>
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<link id="TExtendedNotebook.OnTabDragOverEx"/>
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<link id="TExtendedNotebook.OnTabDragOver"/>
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<link id="TExtendedNotebook.DragOver"/>
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</seealso>
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</element>
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<element name="TNotebookTabDragOverEvent.Sender">
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<short>Object for the notification.</short>
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</element>
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<element name="TNotebookTabDragOverEvent.Source">
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<short>Control where the drag operation originated.</short>
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</element>
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<element name="TNotebookTabDragOverEvent.OldIndex">
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<short>Original ordinal position for the dragged tab.</short>
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</element>
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<element name="TNotebookTabDragOverEvent.NewIndex">
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<short>New ordinal position for the dragged tab.</short>
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</element>
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<element name="TNotebookTabDragOverEvent.CopyDrag">
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<short>
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<b>True</b> if the Ctrl key is pressed during the drag and drop operation.
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</short>
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</element>
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<element name="TNotebookTabDragOverEvent.Accept">
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<short><b>True</b> if the notebook control can accept the dragged tab.</short>
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</element>
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<element name="TExtendedNotebook">
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<short>
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Implements a notebook or page control which supports drag and drop events for
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its tabs.
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</short>
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<descr>
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<p>
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TExtendedNotebook is a TPageControl descendant, and extends the ancestor
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class with properties, methods, and events which enable drag and drop
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operations for the tabs on the paged notebook control. It works in
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conjunction with the DragManager (TDragManager) instance for the LCL
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interface.
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</p>
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<p>
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Overridden methods are provided initiates and completes a drag and drop
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operation, as well as handle mouse up, down and move messages for the
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control. Event handlers signalled during drag and drop are also provided.
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Additional properties are introduced to indicate how drop / drop operations
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are handled by the control and to identify the tab affected by the operation.
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</p>
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<p>
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TExtendedNotebook is used in the implementation of TSourceWindow in the
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Lazarus IDE, where it provides access to the source editor for a tab, as well
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as its form and anchor design surfaces.
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</p>
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</descr>
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<seealso>
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<link id="#lcl.comctrls.TPageControl">TPageControl</link>
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<link id="#lcl.controls.TDragManager">TDragManager</link>
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<link id="#lcl.controls.DragManager">DragManager</link>
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</seealso>
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</element>
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<!-- private -->
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<element name="TExtendedNotebook.FDraggingTabIndex"/>
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<element name="TExtendedNotebook.FOnTabDragDrop"/>
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<element name="TExtendedNotebook.FOnTabDragOver"/>
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<element name="TExtendedNotebook.FOnTabDragOverEx"/>
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<element name="TExtendedNotebook.FOnTabDragDropEx"/>
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<element name="TExtendedNotebook.FOnTabEndDrag"/>
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<element name="TExtendedNotebook.FOnTabStartDrag"/>
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<element name="TExtendedNotebook.FTabDragMode"/>
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<element name="TExtendedNotebook.FTabDragAcceptMode"/>
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<element name="TExtendedNotebook.FTabDragged"/>
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<element name="TExtendedNotebook.FDragOverIndex"/>
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<element name="TExtendedNotebook.FDragToRightSide"/>
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<element name="TExtendedNotebook.FDragOverTabRect"/>
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<element name="TExtendedNotebook.FDragNextToTabRect"/>
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<element name="TExtendedNotebook.FMouseWaitForDrag"/>
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<element name="TExtendedNotebook.FMouseDownIndex"/>
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<element name="TExtendedNotebook.FMouseDownX"/>
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<element name="TExtendedNotebook.FMouseDownY"/>
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<element name="TExtendedNotebook.FTriggerDragX"/>
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<element name="TExtendedNotebook.FTriggerDragY"/>
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<element name="TExtendedNotebook.InitDrag"/>
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<element name="TExtendedNotebook.InvalidateRect"/>
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<element name="TExtendedNotebook.InvalidateRect.ARect"/>
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<element name="TExtendedNotebook.TabIndexForDrag"/>
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<element name="TExtendedNotebook.TabIndexForDrag.Result"/>
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<element name="TExtendedNotebook.TabIndexForDrag.x"/>
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<element name="TExtendedNotebook.TabIndexForDrag.y"/>
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<element name="TExtendedNotebook.TabRectEx"/>
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<element name="TExtendedNotebook.TabRectEx.Result"/>
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<element name="TExtendedNotebook.TabRectEx.AIndex"/>
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<element name="TExtendedNotebook.TabRectEx.X"/>
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<element name="TExtendedNotebook.TabRectEx.Y"/>
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<element name="TExtendedNotebook.TabRectEx.IsRightHalf"/>
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<element name="TExtendedNotebook.MouseDown">
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<short>Handles mouse down messages for the control.</short>
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<descr>
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<p>
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MouseDown is an overridden method in TExtendedNotebook. It initializes
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members used to track drag and drop operations in the class instance, and
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sets the DragCursor for the control. It calls the inherited MouseDown method
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to handle an OnEditingDone event for the ActiveControl on the parent form. It
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updates DragManager for the mouse button in the notification, and signals the
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OnMouseDown event handler (when assigned). When DragMode is set to
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dmAutomatic, a left mouse button event causes the value in MouseCapture to be
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set to <b>True</b>.
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</p>
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<p>
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MouseDown is called from methods which process LM_LBUTTONDOWN,
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LM_RBUTTONDOWN, LM_MBUTTONDOWN, and LM_XBUTTONDOWN window messages for the
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control.
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</p>
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</descr>
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<seealso>
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<link id="#lcl.controls.TControl.OnEditingDone">TControl.OnEditingDone</link>
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<link id="#lcl.controls.TControl.MouseDown">TControl.MouseDown</link>
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<link id="#lcl.controls.TControl.WMLButtonDown">TControl.WMLButtonDown</link>
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<link id="#lcl.controls.TControl.WMRButtonDown">TControl.WMRButtonDown</link>
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<link id="#lcl.controls.TControl.WMMButtonDown">TControl.WMMButtonDown</link>
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<link id="#lcl.controls.TControl.WMXButtonDown">TControl.WMXButtonDown</link>
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</seealso>
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</element>
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<element name="TExtendedNotebook.MouseDown.Button">
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<short>Mouse button for the event.</short>
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</element>
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<element name="TExtendedNotebook.MouseDown.Shift">
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<short>Shift, Ctrl, or Alt modifier for the mouse button event.</short>
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</element>
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<element name="TExtendedNotebook.MouseDown.X">
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<short>Horizontal coordinate for the mouse pointer.</short>
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</element>
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<element name="TExtendedNotebook.MouseDown.Y">
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<short>Vertical coordinate for the mouse pointer.</short>
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</element>
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<element name="TExtendedNotebook.MouseUp">
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<short>Handles mouse up events for the control.</short>
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<descr/>
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<seealso/>
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</element>
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<element name="TExtendedNotebook.MouseUp.Button">
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<short>Mouse button for the event.</short>
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</element>
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<element name="TExtendedNotebook.MouseUp.Shift">
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<short>Shift, Ctrl, or Alt modifier for the mouse button event.</short>
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</element>
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<element name="TExtendedNotebook.MouseUp.X">
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<short>Horizontal coordinate for the mouse pointer.</short>
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</element>
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<element name="TExtendedNotebook.MouseUp.Y">
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<short>Vertical coordinate for the mouse pointer.</short>
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</element>
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<element name="TExtendedNotebook.MouseMove">
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<short>Handles mouse move messages for the control.</short>
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<descr/>
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<seealso/>
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</element>
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<element name="TExtendedNotebook.MouseMove.Shift">
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<short>Shift, Ctrl, or Alt modifier for the mouse button event.</short>
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</element>
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<element name="TExtendedNotebook.MouseMove.X">
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<short>Horizontal coordinate for the mouse pointer.</short>
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</element>
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<element name="TExtendedNotebook.MouseMove.Y">
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<short>Vertical coordinate for the mouse pointer.</short>
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</element>
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<element name="TExtendedNotebook.CNNotify">
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<short>Handles control notification messages for the control.</short>
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<descr/>
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<seealso/>
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</element>
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<element name="TExtendedNotebook.CNNotify.Message">
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<short>Message examined in the method.</short>
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</element>
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<element name="TExtendedNotebook.RemovePage">
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<short>Removes the page at the specified ordinal position.</short>
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<descr/>
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<seealso/>
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</element>
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<element name="TExtendedNotebook.RemovePage.Index">
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<short>Ordinal position for the page removed in the method.</short>
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</element>
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<element name="TExtendedNotebook.InsertPage">
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<short>Inserts the specified page at the ordinal position in Index.</short>
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<descr/>
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<seealso/>
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</element>
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<element name="TExtendedNotebook.InsertPage.APage">
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<short>Page instance inserted in the method.</short>
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</element>
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<element name="TExtendedNotebook.InsertPage.Index">
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<short>Ordinal position where the page instance is inserted.</short>
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</element>
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<element name="TExtendedNotebook.CaptureChanged">
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<short>
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Performs actions when the mouse capture has changed for the control.
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</short>
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<descr/>
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<seealso/>
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</element>
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<element name="TExtendedNotebook.DoStartDrag">
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<short>
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Performs actions needed when a drag operation is started for the control.
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</short>
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<descr/>
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<seealso/>
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</element>
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<element name="TExtendedNotebook.DoStartDrag.DragObject">
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<short>Object which is dragged in the operation.</short>
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</element>
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<element name="TExtendedNotebook.DoEndDrag">
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<short>
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Performs actions needed when a drag operation is ended for the control.
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</short>
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<descr/>
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<seealso/>
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</element>
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<element name="TExtendedNotebook.DoEndDrag.Target">
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<short>Target for the drag operation.</short>
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</element>
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<element name="TExtendedNotebook.DoEndDrag.X">
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<short>Horizontal coordinate where the drag operation was ended.</short>
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</element>
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<element name="TExtendedNotebook.DoEndDrag.Y">
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<short>Vertical coordinate where the drag operation was ended.</short>
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</element>
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<element name="TExtendedNotebook.DragOver">
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<short>
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Performs actions needed when a drag operation is over a tab on the control.
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</short>
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<descr/>
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<seealso/>
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</element>
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<element name="TExtendedNotebook.DragOver.Source">
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<short/>
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</element>
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<element name="TExtendedNotebook.DragOver.X">
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<short/>
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</element>
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<element name="TExtendedNotebook.DragOver.Y">
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<short/>
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</element>
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<element name="TExtendedNotebook.DragOver.State">
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<short/>
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</element>
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<element name="TExtendedNotebook.DragOver.Accept">
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<short/>
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</element>
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<element name="TExtendedNotebook.DragCanceled">
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<short>
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Performs actions needed to cancel a drag operation for the control.
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</short>
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<descr/>
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<seealso/>
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</element>
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<element name="TExtendedNotebook.PaintWindow">
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<short>
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Paints the window for the control to the specified device context.
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</short>
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<descr/>
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<seealso>
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<link id="#lcl.controls.TWinControl.PaintWindow">TWinControl.PaintWindow</link>
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<link id="#lcl.comctrls.TPageControl.TabPosition">TPageControl.TabPosition</link>
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</seealso>
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</element>
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<element name="TExtendedNotebook.PaintWindow.DC">
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<short>Device context where the window is drawn.</short>
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</element>
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<element name="TExtendedNotebook.Create">
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<short>Constructor for the class instance.</short>
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<descr>
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<p>
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<var>Create</var> is the overridden constructor for the class instance. It
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ensures that internal members used in drag and drop operations are
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initialized for the class instance.
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</p>
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</descr>
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<seealso>
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<link id="TExtendedNotebook.TabDragMode"/>
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<link id="#lcl.comctrls.TPageControl.DragCursor">TPageControl.DragCursor</link>
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</seealso>
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</element>
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<element name="TExtendedNotebook.Create.TheOwner">
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<short>Owner of the class instance.</short>
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</element>
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<element name="TExtendedNotebook.DragDrop">
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<short>
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Performs actions needed when a dragged object is dropped onto the control.
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</short>
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<descr>
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<p>
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<var>DragDrop</var> is an overridden method in <var>TExtendedNotebook</var>
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used to perform actions needed when the object in <var>Source</var> is
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dropped on the control.
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</p>
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<p>
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If Source is not derived from TExtendedNotebook, or not the tab being dragged
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in the control, the inherited method is called to signal the OnDragDrop event
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handler (when assigned). No additional actions are performed in the method
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when this situation occurs.
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</p>
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<p>
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The OnTabDragDrop event handler is signalled (when assigned) for the
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TExtendedNotebook instance in Source. The OnTabDragDropEx event handler is
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signalled (when assigned) to allow Ctrl + Drag mouse messages to be handled
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for the control.
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</p>
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<p>
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If the tab order was changed by the drag operation, the tabs (pages) are
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re-ordered to reflect the new position.
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</p>
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</descr>
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<seealso/>
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</element>
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<element name="TExtendedNotebook.DragDrop.Source">
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<short>Object dragged / dropped on to the control.</short>
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</element>
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<element name="TExtendedNotebook.DragDrop.X">
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<short>Horizontal coordinate where the drop occurred.</short>
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</element>
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<element name="TExtendedNotebook.DragDrop.Y">
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<short>Vertical coordinate where the drop occurred.</short>
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</element>
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<element name="TExtendedNotebook.BeginDragTab">
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<short>Starts a drag operation for a tab on the control.</short>
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<descr>
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<p>
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Called from the MouseMove method when a mouse down event has occurred on a
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tab in the control.
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</p>
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|
</descr>
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<seealso/>
|
|
</element>
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|
<element name="TExtendedNotebook.BeginDragTab.ATabIndex">
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<short>Ordinal position for the tab affected in the drag operation.</short>
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</element>
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|
<element name="TExtendedNotebook.BeginDragTab.Immediate">
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<short>
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<b>True</b> if the drag operation starts immediately and the drag threshold
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|
is ignored.
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|
</short>
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|
</element>
|
|
<element name="TExtendedNotebook.BeginDragTab.Threshold">
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|
<short>
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|
Distance that the mouse must move before the drag operation starts, or -1 to
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use the default value from the drag manager.
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</short>
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|
</element>
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|
|
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<element name="TExtendedNotebook.DraggingTabIndex">
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<short>Ordinal position for the tab affected by a drag operation.</short>
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|
<descr>
|
|
<p>
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|
DraggingTabIndex is a read-only Integer property which contains the ordinal
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|
position for the tab or page active in a drag and drop operation. Its value
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|
is assigned in methods like BeginDragTab, DoEndDrag, and DragCanceled. The
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value is set to -1 when drag and drop is not active for the control.
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|
</p>
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|
<p>
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|
Its value is used in the DragOver and DragDrop methods, and is passed as an
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argument to event handlers signalled in the class instance.
|
|
</p>
|
|
</descr>
|
|
<seealso>
|
|
<link id="TExtendedNotebook.BeginDragTab"/>
|
|
<link id="TExtendedNotebook.DoEndDrag"/>
|
|
<link id="TExtendedNotebook.DragCanceled"/>
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|
<link id="TExtendedNotebook.DragOver"/>
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|
<link id="TExtendedNotebook.DragDrop"/>
|
|
</seealso>
|
|
</element>
|
|
|
|
<element name="TExtendedNotebook.OnTabDragOver">
|
|
<short>
|
|
Event handler signalled when the mouse hovers over a tab on the control
|
|
during a drag operation.
|
|
</short>
|
|
<descr/>
|
|
<seealso/>
|
|
</element>
|
|
|
|
<element name="TExtendedNotebook.OnTabDragOverEx">
|
|
<short>
|
|
Event handler signalled when the Ctrl key is held while dragging a tab on the
|
|
control.
|
|
</short>
|
|
<descr/>
|
|
<seealso/>
|
|
</element>
|
|
|
|
<element name="TExtendedNotebook.OnTabDragDrop">
|
|
<short>
|
|
Event handler signalled when an object is dropped onto a tab on the control.
|
|
</short>
|
|
<descr/>
|
|
<seealso/>
|
|
</element>
|
|
|
|
<element name="TExtendedNotebook.OnTabDragDropEx">
|
|
<short>
|
|
Event handler signalled when an object is dropped onto a tab on the control
|
|
while the Ctrl key is held.
|
|
</short>
|
|
<descr/>
|
|
<seealso/>
|
|
</element>
|
|
|
|
<element name="TExtendedNotebook.OnTabEndDrag">
|
|
<short>
|
|
Event handler signalled when a drag operation is ended for a tab on the
|
|
control.
|
|
</short>
|
|
<descr/>
|
|
<seealso/>
|
|
</element>
|
|
|
|
<element name="TExtendedNotebook.OnTabStartDrag">
|
|
<short>
|
|
Event handler signalled when a drag operation is started for a tab on the
|
|
control.
|
|
</short>
|
|
<descr/>
|
|
<seealso/>
|
|
</element>
|
|
|
|
<element name="TExtendedNotebook.TabDragMode">
|
|
<short>
|
|
Indicates how a Drag operation is started for a tab on the control.
|
|
</short>
|
|
<descr>
|
|
<p>
|
|
The default value for the property is <var>dmManual</var>, and indicates that
|
|
the operation is started in code executed by OnTabStartDrag event handler for
|
|
the control. When set to <var>dmAutomatic</var>, the drag operation is
|
|
initialized in the MouseDown method when the left mouse button is clicked on
|
|
a tab for the notebook control.
|
|
</p>
|
|
</descr>
|
|
<seealso/>
|
|
</element>
|
|
|
|
<element name="TExtendedNotebook.TabDragAcceptMode">
|
|
<short>
|
|
Default accept mode for a drag operation for a tab.
|
|
</short>
|
|
<descr>
|
|
<p>
|
|
<var>TabDragAcceptMode</var> is a <var>TDragMode</var> property which
|
|
indicates how a dragged tab is accepted on the destination control. It is
|
|
used in the DragDrop method to determine whether the tab is positioned
|
|
automatically, or handled in code assigned to an event handler.
|
|
</p>
|
|
<p>
|
|
The default value for the property is <var>dmManual</var>, and indicates that
|
|
the tab is relocated manually in the OnTabDragDropEx event handler for the
|
|
control. When set to <var>dmAutomatic</var>, the tab is automatically
|
|
relocated using the Move method in the Pages collection for the control.
|
|
</p>
|
|
</descr>
|
|
<seealso/>
|
|
</element>
|
|
|
|
</module>
|
|
|
|
</package>
|
|
</fpdoc-descriptions>
|