Class BlockView
java.lang.Object
javax.swing.text.View
javax.swing.text.CompositeView
javax.swing.text.BoxView
javax.swing.text.html.BlockView
- All Implemented Interfaces:
- SwingConstants
- Direct Known Subclasses:
- ListView
A view implementation to display a block (as a box)
 with CSS specifications.
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Field SummaryFields declared in class javax.swing.text.ViewBadBreakWeight, ExcellentBreakWeight, ForcedBreakWeight, GoodBreakWeight, X_AXIS, Y_AXISFields declared in interface javax.swing.SwingConstantsBOTTOM, CENTER, EAST, HORIZONTAL, LEADING, LEFT, NEXT, NORTH, NORTH_EAST, NORTH_WEST, PREVIOUS, RIGHT, SOUTH, SOUTH_EAST, SOUTH_WEST, TOP, TRAILING, VERTICAL, WEST
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Constructor SummaryConstructors
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Method SummaryModifier and TypeMethodDescriptionprotected SizeRequirementscalculateMajorAxisRequirements(int axis, SizeRequirements r) Calculate the requirements of the block along the major axis (i.e. the axis along with it tiles).protected SizeRequirementscalculateMinorAxisRequirements(int axis, SizeRequirements r) Calculate the requirements of the block along the minor axis (i.e. the axis orthogonal to the axis along with it tiles).floatgetAlignment(int axis) Gets the alignment.Fetches the attributes to use when rendering.floatgetMaximumSpan(int axis) Determines the maximum span for this view along an axis.floatgetMinimumSpan(int axis) Determines the minimum span for this view along an axis.floatgetPreferredSpan(int axis) Determines the preferred span for this view along an axis.intgetResizeWeight(int axis) Gets the resize weight.protected StyleSheetConvenient method to get the StyleSheet.protected voidlayoutMinorAxis(int targetSpan, int axis, int[] offsets, int[] spans) Performs layout for the minor axis of the box (i.e. the axis orthogonal to the axis that it represents).voidRenders using the given rendering surface and area on that surface.voidEstablishes the parent view for this view.protected voidUpdate any cached values that come from attributes.Methods declared in class javax.swing.text.BoxViewbaselineLayout, baselineRequirements, childAllocation, flipEastAndWestAtEnds, forwardUpdate, getAxis, getChildAllocation, getHeight, getOffset, getSpan, getViewAtPoint, getWidth, isAfter, isAllocationValid, isBefore, isLayoutValid, layout, layoutChanged, layoutMajorAxis, modelToView, paintChild, preferenceChanged, replace, setAxis, setSize, viewToModelMethods declared in class javax.swing.text.CompositeViewgetBottomInset, getInsideAllocation, getLeftInset, getNextEastWestVisualPositionFrom, getNextNorthSouthVisualPositionFrom, getNextVisualPositionFrom, getRightInset, getTopInset, getView, getViewAtPosition, getViewCount, getViewIndex, getViewIndexAtPosition, loadChildren, modelToView, setInsets, setParagraphInsetsMethods declared in class javax.swing.text.Viewappend, breakView, changedUpdate, createFragment, forwardUpdateToView, getBreakWeight, getContainer, getDocument, getElement, getEndOffset, getGraphics, getParent, getStartOffset, getToolTipText, getViewFactory, getViewIndex, insert, insertUpdate, isVisible, modelToView, remove, removeAll, removeUpdate, updateChildren, updateLayout, viewToModel
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Constructor Details- 
BlockViewCreates a new view that represents an html box. This can be used for a number of elements.- Parameters:
- elem- the element to create a view for
- axis- either View.X_AXIS or View.Y_AXIS
 
 
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Method Details- 
setParentEstablishes the parent view for this view. This is guaranteed to be called before any other methods if the parent view is functioning properly.This is implemented to forward to the superclass as well as call the setPropertiesFromAttributes()method to set the paragraph properties from the css attributes. The call is made at this time to ensure the ability to resolve upward through the parents view attributes.- Overrides:
- setParentin class- CompositeView
- Parameters:
- parent- the new parent, or null if the view is being removed from a parent it was previously added to
 
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calculateMajorAxisRequirementsCalculate the requirements of the block along the major axis (i.e. the axis along with it tiles). This is implemented to provide the superclass behavior and then adjust it if the CSS width or height attribute is specified and applicable to the axis.- Overrides:
- calculateMajorAxisRequirementsin class- BoxView
- Parameters:
- axis- the axis being studied
- r- the- SizeRequirementsobject; if- nullone will be created
- Returns:
- the newly initialized SizeRequirementsobject
- See Also:
 
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calculateMinorAxisRequirementsCalculate the requirements of the block along the minor axis (i.e. the axis orthogonal to the axis along with it tiles). This is implemented to provide the superclass behavior and then adjust it if the CSS width or height attribute is specified and applicable to the axis.- Overrides:
- calculateMinorAxisRequirementsin class- BoxView
- Parameters:
- axis- the axis being studied
- r- the- SizeRequirementsobject; if- nullone will be created
- Returns:
- the newly initialized SizeRequirementsobject
- See Also:
 
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layoutMinorAxisprotected void layoutMinorAxis(int targetSpan, int axis, int[] offsets, int[] spans) Performs layout for the minor axis of the box (i.e. the axis orthogonal to the axis that it represents). The results of the layout (the offset and span for each children) are placed in the given arrays which represent the allocations to the children along the minor axis.- Overrides:
- layoutMinorAxisin class- BoxView
- Parameters:
- targetSpan- the total span given to the view, which would be used to layout the children.
- axis- the axis being laid out
- offsets- the offsets from the origin of the view for each of the child views; this is a return value and is filled in by the implementation of this method
- spans- the span of each child view; this is a return value and is filled in by the implementation of this method
 
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paintRenders using the given rendering surface and area on that surface. This is implemented to delegate to the css box painter to paint the border and background prior to the interior.
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getAttributesFetches the attributes to use when rendering. This is implemented to multiplex the attributes specified in the model with a StyleSheet.- Overrides:
- getAttributesin class- View
- Returns:
- the attributes to use when rendering
 
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getResizeWeightpublic int getResizeWeight(int axis) Gets the resize weight.- Overrides:
- getResizeWeightin class- BoxView
- Parameters:
- axis- may be either X_AXIS or Y_AXIS
- Returns:
- the weight
- Throws:
- IllegalArgumentException- for an invalid axis
 
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getAlignmentpublic float getAlignment(int axis) Gets the alignment.- Overrides:
- getAlignmentin class- BoxView
- Parameters:
- axis- may be either X_AXIS or Y_AXIS
- Returns:
- the alignment
 
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getPreferredSpanpublic float getPreferredSpan(int axis) Determines the preferred span for this view along an axis.- Overrides:
- getPreferredSpanin class- BoxView
- Parameters:
- axis- may be either- View.X_AXISor- View.Y_AXIS
- Returns:
- the span the view would like to be rendered into >= 0; typically the view is told to render into the span that is returned, although there is no guarantee; the parent may choose to resize or break the view
- Throws:
- IllegalArgumentException- for an invalid axis type
 
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getMinimumSpanpublic float getMinimumSpan(int axis) Determines the minimum span for this view along an axis.- Overrides:
- getMinimumSpanin class- BoxView
- Parameters:
- axis- may be either- View.X_AXISor- View.Y_AXIS
- Returns:
- the span the view would like to be rendered into >= 0; typically the view is told to render into the span that is returned, although there is no guarantee; the parent may choose to resize or break the view
- Throws:
- IllegalArgumentException- for an invalid axis type
- See Also:
 
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getMaximumSpanpublic float getMaximumSpan(int axis) Determines the maximum span for this view along an axis.- Overrides:
- getMaximumSpanin class- BoxView
- Parameters:
- axis- may be either- View.X_AXISor- View.Y_AXIS
- Returns:
- the span the view would like to be rendered into >= 0; typically the view is told to render into the span that is returned, although there is no guarantee; the parent may choose to resize or break the view
- Throws:
- IllegalArgumentException- for an invalid axis type
- See Also:
 
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setPropertiesFromAttributesprotected void setPropertiesFromAttributes()Update any cached values that come from attributes.
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getStyleSheetConvenient method to get the StyleSheet.- Returns:
- the StyleSheet
 
 
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