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code: simplify direction parsing

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This commit is contained in:
Isaac Freund 2020-07-15 13:02:58 +02:00
parent 1389b4a850
commit 8afe7c2c87
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GPG Key ID: 86DED400DDFD7A11
4 changed files with 13 additions and 22 deletions
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13
river/command.zig
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@ -20,17 +20,8 @@ const std = @import("std");
const Seat = @import("Seat.zig");
pub const Direction = enum {
Next,
Prev,
pub fn parse(str: []const u8) error{InvalidDirection}!Direction {
return if (std.mem.eql(u8, str, "next"))
Direction.Next
else if (std.mem.eql(u8, str, "previous"))
Direction.Prev
else
error.InvalidDirection;
}
next,
previous,
};
// TODO: this could be replaced with a comptime hashmap

6
river/command/focus_output.zig
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@ -33,7 +33,7 @@ pub fn focusOutput(
if (args.len < 2) return Error.NotEnoughArguments;
if (args.len > 2) return Error.TooManyArguments;
const direction = try Direction.parse(args[1]);
const direction = std.meta.stringToEnum(Direction, args[1]) orelse return Error.InvalidDirection;
const root = &seat.input_manager.server.root;
// If the noop output is focused, there are no other outputs to switch to
@ -45,8 +45,8 @@ pub fn focusOutput(
// Focus the next/prev output in the list if there is one, else wrap
const focused_node = @fieldParentPtr(std.TailQueue(Output).Node, "data", seat.focused_output);
seat.focusOutput(switch (direction) {
.Next => if (focused_node.next) |node| &node.data else &root.outputs.first.?.data,
.Prev => if (focused_node.prev) |node| &node.data else &root.outputs.last.?.data,
.next => if (focused_node.next) |node| &node.data else &root.outputs.first.?.data,
.previous => if (focused_node.prev) |node| &node.data else &root.outputs.last.?.data,
});
seat.focus(null);

10
river/command/focus_view.zig
View File

@ -34,7 +34,7 @@ pub fn focusView(
if (args.len < 2) return Error.NotEnoughArguments;
if (args.len > 2) return Error.TooManyArguments;
const direction = try Direction.parse(args[1]);
const direction = std.meta.stringToEnum(Direction, args[1]) orelse return Error.InvalidDirection;
const output = seat.focused_output;
if (seat.focused_view) |current_focus| {
@ -44,8 +44,8 @@ pub fn focusView(
// If there is a currently focused view, focus the next visible view in the stack.
const focused_node = @fieldParentPtr(ViewStack(View).Node, "view", current_focus);
var it = switch (direction) {
.Next => ViewStack(View).iterator(focused_node, output.current.tags),
.Prev => ViewStack(View).reverseIterator(focused_node, output.current.tags),
.next => ViewStack(View).iterator(focused_node, output.current.tags),
.previous => ViewStack(View).reverseIterator(focused_node, output.current.tags),
};
// Skip past the focused node
@ -60,8 +60,8 @@ pub fn focusView(
// There is either no currently focused view or the last visible view in the
// stack is focused and we need to wrap.
var it = switch (direction) {
.Next => ViewStack(View).iterator(output.views.first, output.current.tags),
.Prev => ViewStack(View).reverseIterator(output.views.last, output.current.tags),
.next => ViewStack(View).iterator(output.views.first, output.current.tags),
.previous => ViewStack(View).reverseIterator(output.views.last, output.current.tags),
};
seat.focus(if (it.next()) |node| &node.view else null);

6
river/command/send_to_output.zig
View File

@ -33,7 +33,7 @@ pub fn sendToOutput(
if (args.len < 2) return Error.NotEnoughArguments;
if (args.len > 2) return Error.TooManyArguments;
const direction = try Direction.parse(args[1]);
const direction = std.meta.stringToEnum(Direction, args[1]) orelse return Error.InvalidDirection;
const root = &seat.input_manager.server.root;
if (seat.focused_view) |view| {
@ -46,8 +46,8 @@ pub fn sendToOutput(
// Send to the next/prev output in the list if there is one, else wrap
const current_node = @fieldParentPtr(std.TailQueue(Output).Node, "data", view.output);
const destination_output = switch (direction) {
.Next => if (current_node.next) |node| &node.data else &root.outputs.first.?.data,
.Prev => if (current_node.prev) |node| &node.data else &root.outputs.last.?.data,
.next => if (current_node.next) |node| &node.data else &root.outputs.first.?.data,
.previous => if (current_node.prev) |node| &node.data else &root.outputs.last.?.data,
};
// Move the view to the target output