mirror of
https://github.com/diamondburned/cchat-gtk.git
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124 lines
3.6 KiB
Go
124 lines
3.6 KiB
Go
package container
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import (
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"github.com/diamondburned/cchat"
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"github.com/diamondburned/cchat-gtk/internal/gts"
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"github.com/diamondburned/cchat-gtk/internal/ui/messages/input"
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"github.com/diamondburned/cchat-gtk/internal/ui/messages/message"
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"github.com/diamondburned/cchat-gtk/internal/ui/primitives/menu"
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"github.com/gotk3/gotk3/gtk"
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)
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// BacklogLimit is the maximum number of messages to store in the container at
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// once.
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const BacklogLimit = 35
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type GridMessage interface {
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message.Container
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// Focusable should return a widget that can be focused.
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Focusable() gtk.IWidget
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// Attach should only be called once.
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Attach() []gtk.IWidget
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// AttachMenu should override the stored constructor.
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AttachMenu(items []menu.Item) // save memory
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}
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type PresendGridMessage interface {
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GridMessage
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message.PresendContainer
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}
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// Container is a generic messages container for children messages for children
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// packages.
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type Container interface {
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gtk.IWidget
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// Thread-safe methods.
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cchat.MessagesContainer
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// Thread-unsafe methods.
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CreateMessageUnsafe(cchat.MessageCreate) int
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UpdateMessageUnsafe(cchat.MessageUpdate)
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DeleteMessageUnsafe(cchat.MessageDelete)
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// FirstMessage returns the first message in the buffer. Nil is returned if
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// there's nothing.
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FirstMessage() GridMessage
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// TranslateCoordinates is used for scrolling to the message.
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TranslateCoordinates(parent gtk.IWidget, msg GridMessage) (y int)
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// AddPresendMessage adds and displays an unsent message.
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AddPresendMessage(msg input.PresendMessage) PresendGridMessage
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// LatestMessageFrom returns the last message ID with that author.
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LatestMessageFrom(authorID string) (msgID string, ok bool)
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// UI methods.
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SetFocusHAdjustment(*gtk.Adjustment)
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SetFocusVAdjustment(*gtk.Adjustment)
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}
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// Controller is for menu actions.
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type Controller interface {
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// BindMenu expects the controller to add actioner into the message.
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BindMenu(GridMessage)
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// Bottomed returns whether or not the message scroller is at the bottom.
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Bottomed() bool
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// AuthorEvent is called on message create/update. This is used to update
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// the typer state.
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OnAuthorEvent(a cchat.Author)
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}
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// Constructor is an interface for making custom message implementations which
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// allows GridContainer to generically work with.
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type Constructor interface {
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NewMessage(cchat.MessageCreate) GridMessage
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NewPresendMessage(input.PresendMessage) PresendGridMessage
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}
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const ColumnSpacing = 10
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// GridContainer is an implementation of Container, which allows flexible
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// message grids.
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type GridContainer struct {
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*GridStore
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Controller
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}
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var _ Container = (*GridContainer)(nil)
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func NewGridContainer(constr Constructor, ctrl Controller) *GridContainer {
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return &GridContainer{
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GridStore: NewGridStore(constr, ctrl),
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Controller: ctrl,
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}
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}
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// CreateMessageUnsafe inserts a message as well as cleaning up the backlog if
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// the user is scrolled to the bottom.
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func (c *GridContainer) CreateMessageUnsafe(msg cchat.MessageCreate) int {
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// Insert the message first.
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ix := c.GridStore.CreateMessageUnsafe(msg)
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// Determine if the user is scrolled to the bottom for cleaning up.
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if c.Bottomed() {
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// Clean up the backlog. The function allows a negative n, which would
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// be a no-op.
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c.PopEarliestMessages(c.MessagesLen() - BacklogLimit)
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}
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return ix
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}
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func (c *GridContainer) CreateMessage(msg cchat.MessageCreate) {
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gts.ExecAsync(func() { c.CreateMessageUnsafe(msg) })
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}
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func (c *GridContainer) UpdateMessage(msg cchat.MessageUpdate) {
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gts.ExecAsync(func() { c.UpdateMessageUnsafe(msg) })
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}
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func (c *GridContainer) DeleteMessage(msg cchat.MessageDelete) {
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gts.ExecAsync(func() { c.DeleteMessageUnsafe(msg) })
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}
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