mirror of
https://github.com/koreader/koreader
synced 2024-11-16 06:12:56 +00:00
796 lines
30 KiB
Lua
796 lines
30 KiB
Lua
--[[--
|
|
Widget for taking user input.
|
|
|
|
Example:
|
|
|
|
local InputDialog = require("ui/widget/inputdialog")
|
|
local @{ui.uimanager|UIManager} = require("ui/uimanager")
|
|
local @{logger} = require("logger")
|
|
local @{gettext|_} = require("gettext")
|
|
|
|
local sample_input
|
|
sample_input = InputDialog:new{
|
|
title = _("Dialog title"),
|
|
input = "default value",
|
|
-- A placeholder text shown in the text box.
|
|
input_hint = _("Hint text"),
|
|
input_type = "string",
|
|
-- A description shown above the input.
|
|
description = _("Some more description."),
|
|
-- text_type = "password",
|
|
buttons = {
|
|
{
|
|
{
|
|
text = _("Cancel"),
|
|
callback = function()
|
|
UIManager:close(sample_input)
|
|
end,
|
|
},
|
|
{
|
|
text = _("Save"),
|
|
-- button with is_enter_default set to true will be
|
|
-- triggered after user press the enter key from keyboard
|
|
is_enter_default = true,
|
|
callback = function()
|
|
logger.dbg("Got user input as raw text:", sample_input:getInputText())
|
|
logger.dbg("Got user input as value:", sample_input:getInputValue())
|
|
end,
|
|
},
|
|
}
|
|
},
|
|
}
|
|
UIManager:show(sample_input)
|
|
sample_input:onShowKeyboard()
|
|
|
|
To get a full screen text editor, use:
|
|
fullscreen = true, -- No need to provide any height and width.
|
|
condensed = true,
|
|
allow_newline = true,
|
|
cursor_at_end = false,
|
|
-- and one of these:
|
|
add_scroll_buttons = true,
|
|
add_nav_bar = true,
|
|
|
|
To add |Save|Close| buttons, use:
|
|
save_callback = function(content, closing)
|
|
-- ...Deal with the edited content...
|
|
if closing then
|
|
UIManager:nextTick(
|
|
-- Stuff to do when InputDialog is closed, if anything.
|
|
)
|
|
end
|
|
return nil -- sucess, default notification shown
|
|
return true, success_notif_text
|
|
return false, error_infomsg_text
|
|
end
|
|
|
|
To additionally add a Reset button and have |Reset|Save|Close|, use:
|
|
reset_callback = function()
|
|
return original_content -- success
|
|
return original_content, success_notif_text
|
|
return nil, error_infomsg_text
|
|
end
|
|
|
|
If you don't need more buttons than these, use these options for consistency
|
|
between dialogs, and don't provide any buttons.
|
|
Text used on these buttons and their messages and notifications can be
|
|
changed by providing alternative text with these additional options:
|
|
reset_button_text
|
|
save_button_text
|
|
close_button_text
|
|
close_unsaved_confirm_text
|
|
close_cancel_button_text
|
|
close_discard_button_text
|
|
close_save_button_text
|
|
close_discarded_notif_text
|
|
|
|
If it would take the user more than half a minute to recover from a mistake,
|
|
a "Cancel" button <em>must</em> be added to the dialog. The cancellation button
|
|
should be kept on the left and the button executing the action on the right.
|
|
|
|
It is strongly recommended to use a text describing the action to be
|
|
executed, as demonstrated in the example above. If the resulting phrase would be
|
|
longer than three words it should just read "OK".
|
|
|
|
]]
|
|
|
|
local Blitbuffer = require("ffi/blitbuffer")
|
|
local ButtonTable = require("ui/widget/buttontable")
|
|
local CenterContainer = require("ui/widget/container/centercontainer")
|
|
local Device = require("device")
|
|
local Font = require("ui/font")
|
|
local FrameContainer = require("ui/widget/container/framecontainer")
|
|
local Geom = require("ui/geometry")
|
|
local InfoMessage = require("ui/widget/infomessage")
|
|
local InputContainer = require("ui/widget/container/inputcontainer")
|
|
local InputText = require("ui/widget/inputtext")
|
|
local LineWidget = require("ui/widget/linewidget")
|
|
local MovableContainer = require("ui/widget/container/movablecontainer")
|
|
local MultiConfirmBox = require("ui/widget/multiconfirmbox")
|
|
local Notification = require("ui/widget/notification")
|
|
local Size = require("ui/size")
|
|
local TextBoxWidget = require("ui/widget/textboxwidget")
|
|
local TextWidget = require("ui/widget/textwidget")
|
|
local UIManager = require("ui/uimanager")
|
|
local VerticalGroup = require("ui/widget/verticalgroup")
|
|
local VerticalSpan = require("ui/widget/verticalspan")
|
|
local Screen = Device.screen
|
|
local _ = require("gettext")
|
|
|
|
local InputDialog = InputContainer:new{
|
|
is_always_active = true,
|
|
title = "",
|
|
input = "",
|
|
input_hint = "",
|
|
description = nil,
|
|
buttons = nil,
|
|
input_type = nil,
|
|
enter_callback = nil,
|
|
readonly = false, -- don't allow editing, will not show keyboard
|
|
allow_newline = false, -- allow entering new lines (this disables any enter_callback)
|
|
cursor_at_end = true, -- starts with cursor at end of text, ready for appending
|
|
fullscreen = false, -- adjust to full screen minus keyboard
|
|
condensed = false, -- true will prevent adding air and balance between elements
|
|
add_scroll_buttons = false, -- add scroll Up/Down buttons to first row of buttons
|
|
add_nav_bar = false, -- append a row of page navigation buttons
|
|
-- note that the text widget can be scrolled with Swipe North/South even when no button
|
|
keyboard_hidden = false, -- start with keyboard hidden in full fullscreen mode
|
|
-- needs add_nav_bar to have a Show keyboard button to get it back
|
|
scroll_by_pan = false, -- allow scrolling by lines with Pan (= Swipe, but wait a bit at end
|
|
-- of gesture before releasing) (may conflict with movable)
|
|
|
|
-- If save_callback provided, a Save and a Close buttons will be added to the first row
|
|
-- if reset_callback provided, a Reset button will be added (before Save) to the first row
|
|
save_callback = nil, -- Called with the input text content when Save (and true as 2nd arg
|
|
-- if closing, false if non-closing Save).
|
|
-- Should return nil or true on success, false on failure.
|
|
-- (This save_callback can do some syntax check before saving)
|
|
reset_callback = nil, -- Called with no arg, should return the original content on success,
|
|
-- nil on failure.
|
|
-- Both these callbacks can return a string as a 2nd return value.
|
|
-- This string is then shown:
|
|
-- - on success: as the notification text instead of the default one
|
|
-- - on failure: in an InfoMessage
|
|
close_callback = nil, -- Called when closing (if discarded or saved, after save_callback if saved)
|
|
edited_callback = nil, -- Called on each text modification
|
|
|
|
-- For use by TextEditor plugin:
|
|
view_pos_callback = nil, -- Called with no arg to get initial top_line_num/charpos,
|
|
-- called with (top_line_num, charpos) to give back position on close.
|
|
|
|
-- movable = true, -- set to false if movable gestures conflicts with subwidgets gestures
|
|
-- for now, too much conflicts between InputText and MovableContainer, and
|
|
-- there's the keyboard to exclude from move area (the InputDialog could
|
|
-- be moved under the keyboard, and the user would be locked)
|
|
movable = false,
|
|
|
|
width = nil,
|
|
|
|
text_width = nil,
|
|
text_height = nil,
|
|
|
|
title_face = Font:getFace("x_smalltfont"),
|
|
description_face = Font:getFace("x_smallinfofont"),
|
|
input_face = Font:getFace("x_smallinfofont"),
|
|
|
|
title_padding = Size.padding.default,
|
|
title_margin = Size.margin.title,
|
|
desc_padding = Size.padding.default, -- Use the same as title for their
|
|
desc_margin = Size.margin.title, -- texts to be visually aligned
|
|
input_padding = Size.padding.default,
|
|
input_margin = Size.margin.default,
|
|
button_padding = Size.padding.default,
|
|
border_size = Size.border.window,
|
|
|
|
-- See TextBoxWidget for details about these options
|
|
alignment = "left",
|
|
justified = false,
|
|
lang = nil,
|
|
para_direction_rtl = nil,
|
|
auto_para_direction = false,
|
|
alignment_strict = false,
|
|
|
|
-- for internal use
|
|
_text_modified = false, -- previous known modified status
|
|
_top_line_num = nil,
|
|
_charpos = nil,
|
|
_buttons_edit_callback = nil,
|
|
_buttons_scroll_callback = nil,
|
|
_buttons_backup_done = false,
|
|
_buttons_backup = nil,
|
|
}
|
|
|
|
function InputDialog:init()
|
|
if self.fullscreen then
|
|
self.movable = false
|
|
self.border_size = 0
|
|
self.width = Screen:getWidth() - 2*self.border_size
|
|
self.covers_fullscreen = true -- hint for UIManager:_repaint()
|
|
else
|
|
self.width = self.width or math.floor(Screen:getWidth() * 0.8)
|
|
end
|
|
if self.condensed then
|
|
self.text_width = self.width - 2*(self.border_size + self.input_padding + self.input_margin)
|
|
else
|
|
self.text_width = self.text_width or math.floor(self.width * 0.9)
|
|
end
|
|
if self.readonly then -- hide keyboard if we can't edit
|
|
self.keyboard_hidden = true
|
|
end
|
|
|
|
-- Title & description
|
|
self.title_widget = FrameContainer:new{
|
|
padding = self.title_padding,
|
|
margin = self.title_margin,
|
|
bordersize = 0,
|
|
TextWidget:new{
|
|
text = self.title,
|
|
face = self.title_face,
|
|
max_width = self.width,
|
|
}
|
|
}
|
|
self.title_bar = LineWidget:new{
|
|
dimen = Geom:new{
|
|
w = self.width,
|
|
h = Size.line.thick,
|
|
}
|
|
}
|
|
if self.description then
|
|
self.description_widget = FrameContainer:new{
|
|
padding = self.desc_padding,
|
|
margin = self.desc_margin,
|
|
bordersize = 0,
|
|
TextBoxWidget:new{
|
|
text = self.description,
|
|
face = self.description_face,
|
|
width = self.width - 2*self.desc_padding - 2*self.desc_margin,
|
|
}
|
|
}
|
|
else
|
|
self.description_widget = VerticalSpan:new{ width = 0 }
|
|
end
|
|
|
|
-- Vertical spaces added before and after InputText
|
|
-- (these will be adjusted later to center the input text if needed)
|
|
local vspan_before_input_text = VerticalSpan:new{ width = 0 }
|
|
local vspan_after_input_text = VerticalSpan:new{ width = 0 }
|
|
-- We add the same vertical space used under description after the input widget
|
|
-- (can be disabled by setting condensed=true)
|
|
if not self.condensed then
|
|
local desc_pad_height = self.desc_margin + self.desc_padding
|
|
if self.description then
|
|
vspan_before_input_text.width = 0 -- already provided by description_widget
|
|
vspan_after_input_text.width = desc_pad_height
|
|
else
|
|
vspan_before_input_text.width = desc_pad_height
|
|
vspan_after_input_text.width = desc_pad_height
|
|
end
|
|
end
|
|
|
|
-- Buttons
|
|
-- In case of re-init(), keep backup of original buttons and restore them
|
|
self:_backupRestoreButtons()
|
|
-- If requested, add predefined buttons alongside provided ones
|
|
if self.save_callback then
|
|
-- If save_callback provided, adds (Reset) / Save / Close buttons
|
|
self:_addSaveCloseButtons()
|
|
end
|
|
if self.add_nav_bar then -- Home / End / Up / Down buttons
|
|
self:_addScrollButtons(true)
|
|
elseif self.add_scroll_buttons then -- Up / Down buttons
|
|
self:_addScrollButtons(false)
|
|
end
|
|
-- Buttons Table
|
|
self.button_table = ButtonTable:new{
|
|
width = self.width - 2*self.button_padding,
|
|
button_font_face = "cfont",
|
|
button_font_size = 20,
|
|
buttons = self.buttons,
|
|
zero_sep = true,
|
|
show_parent = self,
|
|
}
|
|
local buttons_container = CenterContainer:new{
|
|
dimen = Geom:new{
|
|
w = self.width,
|
|
h = self.button_table:getSize().h,
|
|
},
|
|
self.button_table,
|
|
}
|
|
|
|
-- Remember provided text_height if any (to restore it on keyboard height change)
|
|
if self.orig_text_height == nil then
|
|
if self.text_height then
|
|
self.orig_text_height = self.text_height
|
|
else
|
|
self.orig_text_height = false
|
|
end
|
|
end
|
|
|
|
-- InputText
|
|
if not self.text_height or self.fullscreen then
|
|
-- We need to find the best height to avoid screen overflow
|
|
-- Create a dummy input widget to get some metrics
|
|
local input_widget = InputText:new{
|
|
text = self.fullscreen and "-" or self.input,
|
|
face = self.input_face,
|
|
width = self.text_width,
|
|
padding = self.input_padding,
|
|
margin = self.input_margin,
|
|
lang = self.lang, -- these might influence height
|
|
para_direction_rtl = self.para_direction_rtl,
|
|
auto_para_direction = self.auto_para_direction,
|
|
}
|
|
local text_height = input_widget:getTextHeight()
|
|
local line_height = input_widget:getLineHeight()
|
|
local input_pad_height = input_widget:getSize().h - text_height
|
|
local keyboard_height = 0
|
|
if not self.keyboard_hidden then
|
|
keyboard_height = input_widget:getKeyboardDimen().h
|
|
end
|
|
input_widget:onCloseWidget() -- free() textboxwidget and keyboard
|
|
-- Find out available height
|
|
local available_height = Screen:getHeight()
|
|
- 2*self.border_size
|
|
- self.title_widget:getSize().h
|
|
- self.title_bar:getSize().h
|
|
- self.description_widget:getSize().h
|
|
- vspan_before_input_text:getSize().h
|
|
- input_pad_height
|
|
- vspan_after_input_text:getSize().h
|
|
- buttons_container:getSize().h
|
|
- keyboard_height
|
|
if self.fullscreen or text_height > available_height then
|
|
-- Don't leave unusable space in the text widget, as the user could think
|
|
-- it's an empty line: move that space in pads after and below (for centering)
|
|
self.text_height = math.floor(available_height / line_height) * line_height
|
|
local pad_height = available_height - self.text_height
|
|
local pad_before = math.ceil(pad_height / 2)
|
|
local pad_after = pad_height - pad_before
|
|
vspan_before_input_text.width = vspan_before_input_text.width + pad_before
|
|
vspan_after_input_text.width = vspan_after_input_text.width + pad_after
|
|
self.cursor_at_end = false -- stay at start if overflowed
|
|
else
|
|
-- Don't leave unusable space in the text widget
|
|
self.text_height = text_height
|
|
end
|
|
end
|
|
if self.view_pos_callback then
|
|
-- Get initial cursor and top line num from callback
|
|
-- (will work in case of re-init as these are saved by onClose()
|
|
self._top_line_num, self._charpos = self.view_pos_callback()
|
|
end
|
|
self._input_widget = InputText:new{
|
|
text = self.input,
|
|
hint = self.input_hint,
|
|
face = self.input_face,
|
|
alignment = self.alignment,
|
|
justified = self.justified,
|
|
lang = self.lang,
|
|
para_direction_rtl = self.para_direction_rtl,
|
|
auto_para_direction = self.auto_para_direction,
|
|
alignment_strict = self.alignment_strict,
|
|
width = self.text_width,
|
|
height = self.text_height or nil,
|
|
padding = self.input_padding,
|
|
margin = self.input_margin,
|
|
input_type = self.input_type,
|
|
text_type = self.text_type,
|
|
enter_callback = self.enter_callback or function()
|
|
for _,btn_row in ipairs(self.buttons) do
|
|
for _,btn in ipairs(btn_row) do
|
|
if btn.is_enter_default then
|
|
btn.callback()
|
|
return
|
|
end
|
|
end
|
|
end
|
|
end,
|
|
edit_callback = self._buttons_edit_callback, -- nil if no Save/Close buttons
|
|
scroll_callback = self._buttons_scroll_callback, -- nil if no Nav or Scroll buttons
|
|
scroll = true,
|
|
scroll_by_pan = self.scroll_by_pan,
|
|
cursor_at_end = self.cursor_at_end,
|
|
readonly = self.readonly,
|
|
parent = self,
|
|
is_text_edited = self._text_modified,
|
|
top_line_num = self._top_line_num,
|
|
charpos = self._charpos,
|
|
}
|
|
if self.allow_newline then -- remove any enter_callback
|
|
self._input_widget.enter_callback = nil
|
|
end
|
|
if Device:hasDPad() then
|
|
--little hack to piggyback on the layout of the button_table to handle the new InputText
|
|
table.insert(self.button_table.layout, 1, {self._input_widget})
|
|
end
|
|
-- Complementary setup for some of our added buttons
|
|
if self.save_callback then
|
|
local save_button = self.button_table:getButtonById("save")
|
|
if self.readonly then
|
|
save_button:setText(_("Read only"), save_button.width)
|
|
elseif not self._input_widget:isTextEditable() then
|
|
save_button:setText(_("Not editable"), save_button.width)
|
|
end
|
|
end
|
|
|
|
-- Final widget
|
|
self.dialog_frame = FrameContainer:new{
|
|
radius = self.fullscreen and 0 or Size.radius.window,
|
|
padding = 0,
|
|
margin = 0,
|
|
bordersize = self.border_size,
|
|
background = Blitbuffer.COLOR_WHITE,
|
|
VerticalGroup:new{
|
|
align = "left",
|
|
self.title_widget,
|
|
self.title_bar,
|
|
self.description_widget,
|
|
vspan_before_input_text,
|
|
CenterContainer:new{
|
|
dimen = Geom:new{
|
|
w = self.width,
|
|
h = self._input_widget:getSize().h,
|
|
},
|
|
self._input_widget,
|
|
},
|
|
vspan_after_input_text,
|
|
buttons_container,
|
|
}
|
|
}
|
|
local frame = self.dialog_frame
|
|
if self.movable then
|
|
frame = MovableContainer:new{
|
|
self.dialog_frame,
|
|
}
|
|
end
|
|
local keyboard_height = self.keyboard_hidden and 0
|
|
or self._input_widget:getKeyboardDimen().h
|
|
self[1] = CenterContainer:new{
|
|
dimen = Geom:new{
|
|
w = Screen:getWidth(),
|
|
h = Screen:getHeight() - keyboard_height,
|
|
},
|
|
frame
|
|
}
|
|
end
|
|
|
|
function InputDialog:getInputText()
|
|
return self._input_widget:getText()
|
|
end
|
|
|
|
function InputDialog:getInputValue()
|
|
local text = self:getInputText()
|
|
if self.input_type == "number" then
|
|
return tonumber(text)
|
|
else
|
|
return text
|
|
end
|
|
end
|
|
|
|
function InputDialog:setInputText(text, edited_state)
|
|
self._input_widget:setText(text)
|
|
if edited_state ~= nil and self._buttons_edit_callback then
|
|
self._buttons_edit_callback(edited_state)
|
|
end
|
|
end
|
|
|
|
function InputDialog:isTextEditable()
|
|
return self._input_widget:isTextEditable()
|
|
end
|
|
|
|
function InputDialog:isTextEdited()
|
|
return self._input_widget:isTextEdited()
|
|
end
|
|
|
|
function InputDialog:onShow()
|
|
UIManager:setDirty(self, function()
|
|
return "ui", self.dialog_frame.dimen
|
|
end)
|
|
end
|
|
|
|
function InputDialog:onCloseWidget()
|
|
self:onClose()
|
|
UIManager:setDirty(nil, self.fullscreen and "full" or function()
|
|
return "partial", self.dialog_frame.dimen
|
|
end)
|
|
end
|
|
|
|
function InputDialog:onShowKeyboard(ignore_first_hold_release)
|
|
if not self.readonly and not self.keyboard_hidden then
|
|
self._input_widget:onShowKeyboard(ignore_first_hold_release)
|
|
end
|
|
end
|
|
|
|
function InputDialog:onKeyboardHeightChanged()
|
|
self.input = self:getInputText() -- re-init with up-to-date text
|
|
self:onClose() -- will close keyboard and save view position
|
|
self._input_widget:onCloseWidget() -- proper cleanup of InputText and its keyboard
|
|
self:free()
|
|
-- Restore original text_height (or reset it if none to force recomputing it)
|
|
self.text_height = self.orig_text_height or nil
|
|
self:init()
|
|
if not self.keyboard_hidden then
|
|
self:onShowKeyboard()
|
|
end
|
|
-- Our position on screen has probably changed, so have the full screen refreshed
|
|
UIManager:setDirty("all", "flashui")
|
|
end
|
|
|
|
function InputDialog:onClose()
|
|
-- Remember current view & position in case of re-init
|
|
self._top_line_num = self._input_widget.top_line_num
|
|
self._charpos = self._input_widget.charpos
|
|
if self.view_pos_callback then
|
|
-- Give back top line num and cursor position
|
|
self.view_pos_callback(self._top_line_num, self._charpos)
|
|
end
|
|
self._input_widget:onCloseKeyboard()
|
|
end
|
|
|
|
function InputDialog:refreshButtons()
|
|
-- Using what ought to be enough:
|
|
-- return "ui", self.button_table.dimen
|
|
-- causes 2 non-intersecting refreshes (because if our buttons
|
|
-- change, the text widget did) that may sometimes cause
|
|
-- the button_table to become white.
|
|
-- Safer to refresh the whole widget so the refreshes can
|
|
-- be merged into one.
|
|
UIManager:setDirty(self, function()
|
|
return "ui", self.dialog_frame.dimen
|
|
end)
|
|
end
|
|
|
|
function InputDialog:_backupRestoreButtons()
|
|
-- In case of re-init(), keep backup of original buttons and restore them
|
|
if self._buttons_backup_done then
|
|
-- Move backup and override current, and re-create backup from original,
|
|
-- to avoid duplicating the copy code)
|
|
self.buttons = self._buttons_backup -- restore (we may restore 'nil')
|
|
end
|
|
if self.buttons then -- (re-)create backup
|
|
self._buttons_backup = {} -- deep copy, except for the buttons themselves
|
|
for i, row in ipairs(self.buttons) do
|
|
if row then
|
|
local row_copy = {}
|
|
self._buttons_backup[i] = row_copy
|
|
for j, b in ipairs(row) do
|
|
row_copy[j] = b
|
|
end
|
|
end
|
|
end
|
|
end
|
|
self._buttons_backup_done = true
|
|
end
|
|
|
|
function InputDialog:_addSaveCloseButtons()
|
|
if not self.buttons then
|
|
self.buttons = {{}}
|
|
end
|
|
-- Add them to the end of first row
|
|
local row = self.buttons[1]
|
|
local button = function(id) -- shortcut for more readable code
|
|
return self.button_table:getButtonById(id)
|
|
end
|
|
-- Callback to enable/disable Reset/Save buttons, for feedback when text modified
|
|
self._buttons_edit_callback = function(edited)
|
|
if self._text_modified and not edited then
|
|
self._text_modified = false
|
|
button("save"):disable()
|
|
if button("reset") then button("reset"):disable() end
|
|
self:refreshButtons()
|
|
elseif edited and not self._text_modified then
|
|
self._text_modified = true
|
|
button("save"):enable()
|
|
if button("reset") then button("reset"):enable() end
|
|
self:refreshButtons()
|
|
end
|
|
if self.edited_callback then
|
|
self.edited_callback()
|
|
end
|
|
end
|
|
if self.reset_callback then
|
|
-- if reset_callback provided, add button to restore
|
|
-- test to some previous state
|
|
table.insert(row, {
|
|
text = self.reset_button_text or _("Reset"),
|
|
id = "reset",
|
|
enabled = self._text_modified,
|
|
callback = function()
|
|
-- Wrapped via Trapper, to allow reset_callback to use Trapper
|
|
-- to show progress or ask questions while getting original content
|
|
require("ui/trapper"):wrap(function()
|
|
local content, msg = self.reset_callback()
|
|
if content then
|
|
self:setInputText(content)
|
|
self._buttons_edit_callback(false)
|
|
UIManager:show(Notification:new{
|
|
text = msg or _("Text reset"),
|
|
timeout = 2
|
|
})
|
|
else -- nil content, assume failure and show msg
|
|
if msg ~= false then -- false allows for no InfoMessage
|
|
UIManager:show(InfoMessage:new{
|
|
text = msg or _("Resetting failed."),
|
|
})
|
|
end
|
|
end
|
|
end)
|
|
end,
|
|
})
|
|
end
|
|
table.insert(row, {
|
|
text = self.save_button_text or _("Save"),
|
|
id = "save",
|
|
enabled = self._text_modified,
|
|
callback = function()
|
|
-- Wrapped via Trapper, to allow save_callback to use Trapper
|
|
-- to show progress or ask questions while saving
|
|
require("ui/trapper"):wrap(function()
|
|
if self._text_modified then
|
|
local success, msg = self.save_callback(self:getInputText())
|
|
if success == false then
|
|
if msg ~= false then -- false allows for no InfoMessage
|
|
UIManager:show(InfoMessage:new{
|
|
text = msg or _("Saving failed."),
|
|
})
|
|
end
|
|
else -- nil or true
|
|
self._buttons_edit_callback(false)
|
|
UIManager:show(Notification:new{
|
|
text = msg or _("Saved"),
|
|
timeout = 2
|
|
})
|
|
end
|
|
end
|
|
end)
|
|
end,
|
|
})
|
|
table.insert(row, {
|
|
text = self.close_button_text or _("Close"),
|
|
id = "close",
|
|
callback = function()
|
|
if self._text_modified then
|
|
UIManager:show(MultiConfirmBox:new{
|
|
text = self.close_unsaved_confirm_text or _("You have unsaved changes."),
|
|
cancel_text = self.close_cancel_button_text or _("Cancel"),
|
|
choice1_text = self.close_discard_button_text or _("Discard"),
|
|
choice1_callback = function()
|
|
if self.close_callback then self.close_callback() end
|
|
UIManager:close(self)
|
|
UIManager:show(Notification:new{
|
|
text = self.close_discarded_notif_text or _("Changes discarded"),
|
|
timeout = 2
|
|
})
|
|
end,
|
|
choice2_text = self.close_save_button_text or _("Save"),
|
|
choice2_callback = function()
|
|
-- Wrapped via Trapper, to allow save_callback to use Trapper
|
|
-- to show progress or ask questions while saving
|
|
require("ui/trapper"):wrap(function()
|
|
local success, msg = self.save_callback(self:getInputText(), true)
|
|
if success == false then
|
|
if msg ~= false then -- false allows for no InfoMessage
|
|
UIManager:show(InfoMessage:new{
|
|
text = msg or _("Saving failed."),
|
|
})
|
|
end
|
|
else -- nil or true
|
|
if self.close_callback then self.close_callback() end
|
|
UIManager:close(self)
|
|
UIManager:show(Notification:new{
|
|
text = msg or _("Saved"),
|
|
timeout = 2
|
|
})
|
|
end
|
|
end)
|
|
end,
|
|
})
|
|
else
|
|
-- Not modified, exit without any message
|
|
if self.close_callback then self.close_callback() end
|
|
UIManager:close(self)
|
|
end
|
|
end,
|
|
})
|
|
end
|
|
|
|
function InputDialog:_addScrollButtons(nav_bar)
|
|
local row
|
|
if nav_bar then -- Add Home / End / Up / Down buttons as a last row
|
|
if not self.buttons then
|
|
self.buttons = {}
|
|
end
|
|
row = {} -- Empty additional buttons row
|
|
table.insert(self.buttons, row)
|
|
else -- Add the Up / Down buttons to the first row
|
|
if not self.buttons then
|
|
self.buttons = {{}}
|
|
end
|
|
row = self.buttons[1]
|
|
end
|
|
if nav_bar then -- Add the Home & End buttons
|
|
-- Also add Keyboard hide/show button if we can
|
|
if self.fullscreen and not self.readonly then
|
|
table.insert(row, {
|
|
text = self.keyboard_hidden and "↑⌨" or "↓⌨",
|
|
id = "keyboard",
|
|
callback = function()
|
|
self.keyboard_hidden = not self.keyboard_hidden
|
|
self.input = self:getInputText() -- re-init with up-to-date text
|
|
self:onClose() -- will close keyboard and save view position
|
|
self:free()
|
|
self:init()
|
|
if not self.keyboard_hidden then
|
|
self:onShowKeyboard()
|
|
end
|
|
end,
|
|
})
|
|
end
|
|
table.insert(row, {
|
|
text = "⇱",
|
|
id = "top",
|
|
callback = function()
|
|
self._input_widget:scrollToTop()
|
|
end,
|
|
})
|
|
table.insert(row, {
|
|
text = "⇲",
|
|
id = "bottom",
|
|
callback = function()
|
|
self._input_widget:scrollToBottom()
|
|
end,
|
|
})
|
|
end
|
|
-- Add the Up & Down buttons
|
|
table.insert(row, {
|
|
text = "△",
|
|
id = "up",
|
|
callback = function()
|
|
self._input_widget:scrollUp()
|
|
end,
|
|
})
|
|
table.insert(row, {
|
|
text = "▽",
|
|
id = "down",
|
|
callback = function()
|
|
self._input_widget:scrollDown()
|
|
end,
|
|
})
|
|
-- Callback to enable/disable buttons, for at-top/at-bottom feedback
|
|
local prev_at_top = false -- Buttons were created enabled
|
|
local prev_at_bottom = false
|
|
local button = function(id) -- shortcut for more readable code
|
|
return self.button_table:getButtonById(id)
|
|
end
|
|
self._buttons_scroll_callback = function(low, high)
|
|
local changed = false
|
|
if prev_at_top and low > 0 then
|
|
button("up"):enable()
|
|
if button("top") then button("top"):enable() end
|
|
prev_at_top = false
|
|
changed = true
|
|
elseif not prev_at_top and low <= 0 then
|
|
button("up"):disable()
|
|
if button("top") then button("top"):disable() end
|
|
prev_at_top = true
|
|
changed = true
|
|
end
|
|
if prev_at_bottom and high < 1 then
|
|
button("down"):enable()
|
|
if button("bottom") then button("bottom"):enable() end
|
|
prev_at_bottom = false
|
|
changed = true
|
|
elseif not prev_at_bottom and high >= 1 then
|
|
button("down"):disable()
|
|
if button("bottom") then button("bottom"):disable() end
|
|
prev_at_bottom = true
|
|
changed = true
|
|
end
|
|
if changed then
|
|
self:refreshButtons()
|
|
end
|
|
end
|
|
end
|
|
|
|
return InputDialog
|