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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
//! CSS table formatting contexts.
#![deny(unsafe_block)]
use context::LayoutContext;
use flow::{BaseFlow, TableColGroupFlowClass, FlowClass, Flow};
use fragment::{Fragment, TableColumnFragment};
use layout_debug;
use wrapper::ThreadSafeLayoutNode;
use servo_util::geometry::Au;
use std::fmt;
use style::computed_values::LengthOrPercentageOrAuto;
/// A table formatting context.
pub struct TableColGroupFlow {
/// Data common to all flows.
pub base: BaseFlow,
/// The associated fragment.
pub fragment: Option<Fragment>,
/// The table column fragments
pub cols: Vec<Fragment>,
/// The specified inline-sizes of table columns. (We use `LengthOrPercentageOrAuto` here in
/// lieu of `ColumnInlineSize` because column groups do not establish minimum or preferred
/// inline sizes.)
pub inline_sizes: Vec<LengthOrPercentageOrAuto>,
}
impl TableColGroupFlow {
pub fn from_node_and_fragments(node: &ThreadSafeLayoutNode,
fragment: Fragment,
fragments: Vec<Fragment>)
-> TableColGroupFlow {
TableColGroupFlow {
base: BaseFlow::new((*node).clone()),
fragment: Some(fragment),
cols: fragments,
inline_sizes: vec!(),
}
}
}
impl Flow for TableColGroupFlow {
fn class(&self) -> FlowClass {
TableColGroupFlowClass
}
fn as_table_colgroup<'a>(&'a mut self) -> &'a mut TableColGroupFlow {
self
}
fn bubble_inline_sizes(&mut self) {
let _scope = layout_debug_scope!("table_colgroup::bubble_inline_sizes {:x}",
self.base.debug_id());
for fragment in self.cols.iter() {
// Retrieve the specified value from the appropriate CSS property.
let inline_size = fragment.style().content_inline_size();
let span: int = match fragment.specific {
TableColumnFragment(col_fragment) => col_fragment.span.unwrap_or(1),
_ => fail!("non-table-column fragment inside table column?!"),
};
for _ in range(0, span) {
self.inline_sizes.push(inline_size)
}
}
}
/// Table column inline-sizes are assigned in the table flow and propagated to table row flows
/// and/or rowgroup flows. Therefore, table colgroup flows do not need to assign inline-sizes.
fn assign_inline_sizes(&mut self, _: &LayoutContext) {
}
/// Table columns do not have block-size.
fn assign_block_size(&mut self, _: &LayoutContext) {
}
fn update_late_computed_inline_position_if_necessary(&mut self, _: Au) {}
fn update_late_computed_block_position_if_necessary(&mut self, _: Au) {}
// Table columns are invisible.
fn build_display_list(&mut self, _: &LayoutContext) {}
}
impl fmt::Show for TableColGroupFlow {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match self.fragment {
Some(ref rb) => write!(f, "TableColGroupFlow: {}", rb),
None => write!(f, "TableColGroupFlow"),
}
}
}
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