/*
* This file is part of gitg
*
* Copyright (C) 2012 - Jesse van den Kieboom
*
* gitg is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* gitg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with gitg. If not, see .
*/
namespace GitgGtk
{
public class DiffView : WebKit.WebView
{
private Ggit.Diff? d_diff;
private Ggit.Commit? d_commit;
private Settings d_fontsettings;
private static Gee.HashMap s_diffmap;
private static uint64 s_diff_id;
public File? custom_css { get; construct; }
public File? custom_js { get; construct; }
public Ggit.DiffOptions? options { get; construct set; }
private Cancellable d_cancellable;
private bool d_loaded;
public Ggit.Diff? diff
{
get { return d_diff; }
set
{
d_diff = value;
d_commit = null;
update();
}
}
public Ggit.Commit? commit
{
get { return d_commit; }
set
{
d_commit = value;
d_diff = null;
update();
}
}
static construct
{
s_diffmap = new Gee.HashMap();
var context = WebKit.WebContext.get_default();
context.register_uri_scheme("gitg-diff", gitg_diff_request);
}
private static DiffViewRequest? parse_request(WebKit.URISchemeRequest request)
{
var uri = new Soup.URI(request.get_uri());
var path = uri.get_path();
var parts = path.split("/", 3);
if (parts.length != 3)
{
return null;
}
uri.set_scheme(parts[1]);
uri.set_path("/" + parts[2]);
DiffView? view = null;
var q = uri.get_query();
if (q != null)
{
var f = Soup.Form.decode(q);
var vid = f.lookup("viewid");
if (vid != null && s_diffmap.has_key(vid))
{
view = s_diffmap[vid];
}
}
switch (parts[1])
{
case "resource":
return new DiffViewRequestResource(view, request, uri);
case "diff":
return new DiffViewRequestDiff(view, request, uri);
}
return null;
}
private static void gitg_diff_request(WebKit.URISchemeRequest request)
{
var req = parse_request(request);
if (req.view != null)
{
req.view.request(req);
}
else
{
req.run(null);
}
}
private void parse_font(string val, ref string family, ref uint size)
{
var fdesc = Pango.FontDescription.from_string(val);
var f = fdesc.get_family();
var s = fdesc.get_size();
if (f != null && f != "")
{
family = f;
}
if (s != 0)
{
if (fdesc.get_size_is_absolute())
{
size = s;
}
else
{
size = s / Pango.SCALE;
}
}
}
public void request(DiffViewRequest request)
{
request.run(d_cancellable);
}
private void update_font_settings()
{
var settings = get_settings();
var fname = settings.default_font_family;
var fsize = settings.default_font_size;
parse_font(d_fontsettings.get_string("font-name"), ref fname, ref fsize);
settings.default_font_family = fname;
settings.default_font_size = fsize;
fname = settings.monospace_font_family;
fsize = settings.default_monospace_font_size;
parse_font(d_fontsettings.get_string("monospace-font-name"), ref fname, ref fsize);
settings.monospace_font_family = fname;
settings.default_monospace_font_size = fsize;
}
protected override void constructed()
{
base.constructed();
var settings = new WebKit.Settings();
var dbg = Environment.get_variable("GITG_GTK_DIFF_VIEW_DEBUG") != null;
if (dbg)
{
settings.enable_developer_extras = true;
Timeout.add(500, () => {
get_inspector().show();
return false;
});
}
settings.javascript_can_access_clipboard = true;
d_fontsettings = new Settings("org.gnome.desktop.interface");
set_settings(settings);
update_font_settings();
d_fontsettings.changed["monospace-font-name"].connect((s, k) => {
update_font_settings();
});
d_fontsettings.changed["font-name"].connect((s, k) => {
update_font_settings();
});
++s_diff_id;
s_diffmap[s_diff_id.to_string()] = this;
d_cancellable = new Cancellable();
load_changed.connect((v, ev) => {
if (ev == WebKit.LoadEvent.FINISHED)
{
d_loaded = true;
update();
}
});
// Load the diff base html
var uri = "gitg-diff:///resource/org/gnome/gitg/gtk/diff-view/base.html?viewid=" + s_diff_id.to_string();
// Add custom js as a query parameter
if (custom_js != null)
{
uri += "&js=" + Soup.URI.encode(custom_js.get_uri(), null);
}
// Add custom css as a query parameter
if (custom_css != null)
{
uri += "&css=" + Soup.URI.encode(custom_css.get_uri(), null);
}
d_loaded = false;
load_uri(uri);
}
public DiffView(File? custom_js)
{
Object(custom_js: custom_js);
}
private void update()
{
if (!d_loaded || (d_diff == null && d_commit == null))
{
return;
}
// Cancel running operations
d_cancellable.cancel();
d_cancellable = new Cancellable();
if (d_commit != null)
{
d_diff = null;
var repo = d_commit.get_owner();
try
{
var parents = d_commit.get_parents();
// Create a new diff from the parents to the commit tree
for (var i = 0; i < parents.size(); ++i)
{
var parent = parents.get(0);
if (i == 0)
{
d_diff = new Ggit.Diff.tree_to_tree(repo,
options,
parent.get_tree(),
d_commit.get_tree());
}
else
{
var d = new Ggit.Diff.tree_to_tree(repo,
options,
parent.get_tree(),
d_commit.get_tree());
d_diff.merge(d);
}
}
}
catch {}
}
if (d_diff != null)
{
run_javascript.begin("update_diff();", d_cancellable, (obj, res) => {
try
{
run_javascript.end(res);
} catch {}
});
}
}
}
}
// vi:ts=4