public static RecentLab GetLab()
{
if (link == null)
{
link = new RecentLab();
}
return(link);
}
protected override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
SetContentView(Resource.Layout.activity_recent);
recycle = FindViewById <RecyclerView>(Resource.Id.rec_list);
recycle.SetLayoutManager(new LinearLayoutManager(this));
DividerItemDecoration dividerItemDecoration = new DividerItemDecoration(recycle.Context, DividerItemDecoration.Vertical);
recycle.AddItemDecoration(dividerItemDecoration);
RecentLab lab = RecentLab.GetLab();
List <Note> list = lab.list;
adapter = new RecentAdapter(list);
recycle.SetAdapter(adapter);
recycle.ScrollToPosition(list.Count() - 1);
}
protected override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
SetContentView(Resource.Layout.activity_main);
text = FindViewById <EditText>(Resource.Id.text_window);
text.ShowSoftInputOnFocus = false;
if (Intent.HasExtra("exp"))
{
text.Text = Intent.GetStringExtra("exp");
text.SetSelection(text.Text.Length);
hooks = Intent.GetIntExtra("hooks", 0);
}
recent = FindViewById <Button>(Resource.Id.button_recent);
recent.Click += delegate(object sender, EventArgs e)
{
Intent intent = new Intent(this, typeof(RecentActivity));
StartActivity(intent);
};
ac = FindViewById <Button>(Resource.Id.button_ac);
ac.Click += delegate(object sender, EventArgs e)
{
text.Text = "";
hooks = 0;
};
exp = FindViewById <Button>(Resource.Id.button_exp);
exp.Click += delegate(object sender, EventArgs e)
{
if (LengthControl())
{
ChangeOperation();
int index = text.SelectionStart;
if (index != 0)
{
text.Text = text.Text.Insert(index, "^");
text.SetSelection(index + 1);
}
}
};
demul = FindViewById <Button>(Resource.Id.button_demul);
demul.Click += delegate(object sender, EventArgs e)
{
if (LengthControl())
{
ChangeOperation();
int index = text.SelectionStart;
if (index != 0)
{
text.Text = text.Text.Insert(index, "/");
text.SetSelection(index + 1);
}
}
};
x = FindViewById <Button>(Resource.Id.button_x);
x.Click += delegate(object sender, EventArgs e)
{
SymbolsControl();
int index = text.SelectionStart;
if (index > 0)
{
if (text.Text[index - 1] == '(')
{
hooks--;
}
if (text.Text[index - 1] == ')')
{
hooks++;
}
text.Text = text.Text.Remove(index - 1, 1);
text.SetSelection(index - 1);
}
};
bt7 = FindViewById <Button>(Resource.Id.button_7);
bt7.Click += delegate(object sender, EventArgs e)
{
if (LengthControl())
{
int index = text.SelectionStart;
text.Text = text.Text.Insert(index, "7");
text.SetSelection(index + 1);
}
};
bt8 = FindViewById <Button>(Resource.Id.button_8);
bt8.Click += delegate(object sender, EventArgs e)
{
if (LengthControl())
{
int index = text.SelectionStart;
text.Text = text.Text.Insert(index, "8");
text.SetSelection(index + 1);
}
};
bt9 = FindViewById <Button>(Resource.Id.button_9);
bt9.Click += delegate(object sender, EventArgs e)
{
if (LengthControl())
{
int index = text.SelectionStart;
text.Text = text.Text.Insert(index, "9");
text.SetSelection(index + 1);
}
};
mul = FindViewById <Button>(Resource.Id.button_mul);
mul.Click += delegate(object sender, EventArgs e)
{
if (LengthControl())
{
ChangeOperation();
int index = text.SelectionStart;
if (index != 0)
{
text.Text = text.Text.Insert(index, "*");
text.SetSelection(index + 1);
}
}
};
mul.LongClick += delegate(object sender, View.LongClickEventArgs e)
{
if (LengthControl())
{
ChangeOperation();
int index = text.SelectionStart;
text.Text = text.Text.Insert(index, "!");
text.SetSelection(index + 1);
}
};
bt4 = FindViewById <Button>(Resource.Id.button_4);
bt4.Click += delegate(object sender, EventArgs e)
{
if (LengthControl())
{
int index = text.SelectionStart;
text.Text = text.Text.Insert(index, "4");
text.SetSelection(index + 1);
}
};
bt5 = FindViewById <Button>(Resource.Id.button_5);
bt5.Click += delegate(object sender, EventArgs e)
{
if (LengthControl())
{
int index = text.SelectionStart;
text.Text = text.Text.Insert(index, "5");
text.SetSelection(index + 1);
}
};
bt6 = FindViewById <Button>(Resource.Id.button_6);
bt6.Click += delegate(object sender, EventArgs e)
{
if (LengthControl())
{
int index = text.SelectionStart;
text.Text = text.Text.Insert(index, "6");
text.SetSelection(index + 1);
}
};
sub = FindViewById <Button>(Resource.Id.button_sub);
sub.Click += delegate(object sender, EventArgs e)
{
if (LengthControl())
{
int index = text.SelectionStart;
if (!(index > 1 && text.Text[index - 1] == '-' && (text.Text[index - 2] == '+' || text.Text[index - 2] == '-' ||
text.Text[index - 2] == '*' || text.Text[index - 2] == '/' || text.Text[index - 2] == '^')))
{
text.Text = text.Text.Insert(index, "-");
text.SetSelection(index + 1);
}
}
};
bt1 = FindViewById <Button>(Resource.Id.button_1);
bt1.Click += delegate(object sender, EventArgs e)
{
if (LengthControl())
{
int index = text.SelectionStart;
text.Text = text.Text.Insert(index, "1");
text.SetSelection(index + 1);
}
};
bt2 = FindViewById <Button>(Resource.Id.button_2);
bt2.Click += delegate(object sender, EventArgs e)
{
if (LengthControl())
{
int index = text.SelectionStart;
text.Text = text.Text.Insert(index, "2");
text.SetSelection(index + 1);
}
};
bt3 = FindViewById <Button>(Resource.Id.button_3);
bt3.Click += delegate(object sender, EventArgs e)
{
if (LengthControl())
{
int index = text.SelectionStart;
text.Text = text.Text.Insert(index, "3");
text.SetSelection(index + 1);
}
};
add = FindViewById <Button>(Resource.Id.button_add);
add.Click += delegate(object sender, EventArgs e)
{
if (LengthControl())
{
ChangeOperation();
int index = text.SelectionStart;
text.Text = text.Text.Insert(index, "+");
text.SetSelection(index + 1);
}
};
bt0 = FindViewById <Button>(Resource.Id.button_0);
bt0.Click += delegate(object sender, EventArgs e)
{
if (LengthControl())
{
int index = text.SelectionStart;
text.Text = text.Text.Insert(index, "0");
text.SetSelection(index + 1);
}
};
com = FindViewById <Button>(Resource.Id.button_com);
com.Click += delegate(object sender, EventArgs e)
{
if (LengthControl())
{
int index = text.SelectionStart;
if (index == 0 || text.Text[index - 1] == '+' || text.Text[index - 1] == '-' || text.Text[index - 1] == '*' || text.Text[index - 1] == '/' ||
text.Text[index - 1] == '^' || text.Text[index - 1] == '(')
{
text.Text = text.Text.Insert(index, "0");
index++;
}
if (text.Text[index - 1] != ',')
{
text.Text = text.Text.Insert(index, ",");
text.SetSelection(index + 1);
}
}
};
hook = FindViewById <Button>(Resource.Id.button_hook);
hook.Click += delegate(object sender, EventArgs e)
{
if (LengthControl())
{
int index = text.SelectionStart;
if (index == 0 || text.Text[index - 1] == '+' || text.Text[index - 1] == '-' || text.Text[index - 1] == '*' || text.Text[index - 1] == '/' ||
text.Text[index - 1] == '^' || text.Text[index - 1] == '(')
{
text.Text = text.Text.Insert(index, "(");
text.SetSelection(index + 1);
hooks++;
}
else if (hooks == 0)
{
text.Text = text.Text.Insert(index, "*(");
text.SetSelection(index + 2);
hooks++;
}
else
{
text.Text = text.Text.Insert(index, ")");
text.SetSelection(index + 1);
hooks--;
}
}
};
opp = FindViewById <Button>(Resource.Id.button_opp);
opp.Click += delegate(object sender, EventArgs e)
{
SymbolsControl();
string result = "";
if (text.Text.Length != 0)
{
result = Calculate(text.Text).ToString();
if (result == "" || result == GetString(Resource.String.not_a_number))
{
Toast.MakeText(this, Resource.String.expression_error, ToastLength.Short).Show();
}
else
{
if (result == GetString(Resource.String.infinity))
{
result = "∞";
}
else if (result == GetString(Resource.String.not_a_number))
{
result = "-∞";
}
if (!String.Equals(text.Text, result))
{
RecentLab lab = RecentLab.GetLab();
if (lab.list.Count() >= 30)
{
lab.list.RemoveAt(0);
}
lab.list.Add(new Note {
left = text.Text, right = result, hooks = this.hooks
});
}
text.Text = result;
text.SetSelection(result.Length);
hooks = 0;
}
}
};
}
