Function draw 

pub fn draw(
    f: &mut Frame<'_>,
    item_name: &str,
    detail: &ItemDetail,
    mode: &Mode,
    focus: &DetailSection,
    last_staging_focus: DetailSection,
    commit_selection: usize,
    commit_search_query: &Option<String>,
    file_selection: usize,
    file_diff: &[DiffLine],
    diff_scroll: usize,
    staging_file_selection: usize,
    commit_details_scroll: usize,
    local_branch_selection: usize,
    remote_branch_selection: usize,
    local_tag_selection: usize,
    remote_selection: usize,
    remote_picker_selection: usize,
    stash_selection: usize,
    stash_file_selection: usize,
    file_list_selection: usize,
    file_content_scroll: usize,
    visible_files: &[FileTreeItem],
    detail_tab: usize,
    graph_scroll: usize,
    graph_selection: usize,
    help_scroll: usize,
    areas: &mut DetailAreas,
    input_buffer: &str,
    commit_editing: bool,
    branch_action_target: &Option<(String, bool)>,
    tag_action_target_oid: &Option<String>,
    tag_delete_target: &Option<(String, bool)>,
    tag_push_target: &Option<String>,
    discard_target: &Option<(String, bool)>,
    stash_apply_delete_after: bool,
    commit_amend: bool,
    commit_input_scroll: usize,
    inspect_horizontal_split_pct: u16,
    inspect_vertical_split_pct: u16,
    workspace_main_split_pct: u16,
    files_horizontal_split_pct: u16,
    branches_horizontal_split_pct: u16,
    stashes_horizontal_split_pct: u16,
    stashes_vertical_split_pct: u16,
    overview_horizontal_split_pct: u16,
    app: &App,
    area: Rect,
)

Renders the detail view into area and records panel bounds in areas.