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ext.py
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ext.py
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# -*- coding: utf-8 -*-
################################################################
# NOTE: This part of the html5 library is superseded by flare. #
# It is not improved anymore, and just remains here for #
# existing projects. #
# #
# Visit https://github.com/mausbrand/flare for details. #
################################################################
from . import core as html5
from . import utils
class Button(html5.Button):
def __init__(self, txt=None, callback=None, className=None, *args, **kwargs):
super().__init__(*args, **kwargs)
self["class"] = "btn"
if className:
self.addClass(className)
self["type"] = "button"
if txt is not None:
self.setText(txt)
self.callback = callback
self.sinkEvent("onClick")
def setText(self, txt):
if txt is not None:
self.element.innerHTML = txt
self["title"] = txt
else:
self.element.innerHTML = ""
self["title"] = ""
def onClick(self, event):
event.stopPropagation()
event.preventDefault()
if self.callback is not None:
self.callback(self)
class Input(html5.Input):
def __init__(self, type="text", placeholder=None, callback=None, id=None, focusCallback=None, *args, **kwargs):
"""
:param type: Input type. Default: "text
:param placeholder: Placeholder text. Default: None
:param callback: Function to be called onChanged: callback(id, value)
:param id: Optional id of the input element. Will be passed to callback
:return:
"""
super().__init__(*args, **kwargs)
self["class"] = "input"
self["type"] = type
if placeholder is not None:
self["placeholder"] = placeholder
self.callback = callback
if id is not None:
self["id"] = id
self.sinkEvent("onChange")
self.focusCallback = focusCallback
if focusCallback:
self.sinkEvent("onFocus")
def onChange(self, event):
event.stopPropagation()
event.preventDefault()
if self.callback is not None:
self.callback(self, self["id"], self["value"])
def onFocus(self, event):
event.stopPropagation()
event.preventDefault()
if self.focusCallback is not None:
self.focusCallback(self, self["id"], self["value"])
def onDetach(self):
super().onDetach()
self.callback = None
class Popup(html5.Div):
def __init__(self, title=None, id=None, className=None, icon=None, enableShortcuts=True, closeable=True, *args, **kwargs):
super().__init__("""
<div class="box" [name]="popupBox">
<div class="box-head" [name]="popupHead">
<div class="item" [name]="popupHeadItem">
<div class="item-image">
<i class="i i--small" [name]="popupIcon"></i>
</div>
<div class="item-content">
<div class="item-headline" [name]="popupHeadline"></div>
</div>
</div>
</div>
<div class="box-body box--content" [name]="popupBody"></div>
<div class="box-foot box--content bar" [name]="popupFoot"></div>
</div>
""")
self.appendChild = self.popupBody.appendChild
self.fromHTML = lambda *args, **kwargs: self.popupBody.fromHTML(*args, **kwargs) if kwargs.get("bindTo") else self.popupBody.fromHTML(bindTo=self, *args, **kwargs)
self["class"] = "popup popup--center is-active"
if className:
self.addClass(className)
if closeable:
closeBtn = Button("×", self.close, className="item-action")
closeBtn.removeClass("btn")
self.popupHeadItem.appendChild(closeBtn)
if title:
self.popupHeadline.appendChild(title)
if icon:
self.popupIcon.appendChild(icon[0])
elif title:
self.popupIcon.appendChild(title[0])
else:
self.popupIcon.appendChild("Vi") #fixme!!! this _LIBRARY_ is not only used in the Vi...
# id can be used to pass information to callbacks
self.id = id
#FIXME: Implement a global overlay! One popupOverlay next to a list of popups.
self.popupOverlay = html5.Div()
self.popupOverlay["class"] = "popup-overlay is-active"
self.enableShortcuts = enableShortcuts
self.onDocumentKeyDownMethod = None
self.popupOverlay.appendChild(self)
html5.Body().appendChild(self.popupOverlay)
#FIXME: Close/Cancel every popup with click on popupCloseBtn without removing the global overlay.
def onAttach(self):
super(Popup, self).onAttach()
if self.enableShortcuts:
self.onDocumentKeyDownMethod = self.onDocumentKeyDown # safe reference to method
html5.document.addEventListener("keydown", self.onDocumentKeyDownMethod)
def onDetach(self):
super(Popup, self).onDetach()
if self.enableShortcuts:
html5.document.removeEventListener("keydown", self.onDocumentKeyDownMethod)
def onDocumentKeyDown(self, event):
if html5.isEscape(event):
self.close()
def close(self, *args, **kwargs):
html5.Body().removeChild(self.popupOverlay)
self.popupOverlay = None
class InputDialog(Popup):
def __init__(self, text, value="", successHandler=None, abortHandler=None,
successLbl="OK", abortLbl="Cancel", placeholder="", *args, **kwargs):
super().__init__(*args, **kwargs)
self.addClass("popup--inputdialog")
self.sinkEvent("onKeyDown", "onKeyUp")
self.successHandler = successHandler
self.abortHandler = abortHandler
self.fromHTML(
"""
<div class="input-group">
<label class="label">
{{text}}
</label>
<input class="input" [name]="inputElem" value="{{value}}" placeholder="{{placeholder}}" />
</div>
""",
vars={
"text": text,
"value": value,
"placeholder": placeholder
}
)
# Cancel
self.popupFoot.appendChild(Button(abortLbl, self.onCancel, className="btn--cancel btn--danger"))
# Okay
self.okayBtn = Button(successLbl, self.onOkay, className="btn--okay btn--primary")
if not value:
self.okayBtn.disable()
self.popupFoot.appendChild(self.okayBtn)
self.inputElem.focus()
def onKeyDown(self, event):
if html5.isReturn(event) and self.inputElem["value"]:
event.stopPropagation()
event.preventDefault()
self.onOkay()
def onKeyUp(self, event):
if self.inputElem["value"]:
self.okayBtn.enable()
else:
self.okayBtn.disable()
def onDocumentKeyDown(self, event):
if html5.isEscape(event):
event.stopPropagation()
event.preventDefault()
self.onCancel()
def onOkay(self, *args, **kwargs):
if self.successHandler:
self.successHandler(self, self.inputElem["value"])
self.close()
def onCancel(self, *args, **kwargs):
if self.abortHandler:
self.abortHandler(self, self.inputElem["value"])
self.close()
class Alert(Popup):
"""
Just displaying an alerting message box with OK-button.
"""
def __init__(self, msg, title=None, className=None, okCallback=None, okLabel="OK", icon="!", closeable=True, *args, **kwargs):
super().__init__(title, className=None, icon=icon, closeable=closeable, *args, **kwargs)
self.addClass("popup--alert")
if className:
self.addClass(className)
self.okCallback = okCallback
message = html5.Span()
message.addClass("alert-msg")
self.popupBody.appendChild(message)
if isinstance(msg, str):
msg = msg.replace("\n", "<br>")
message.appendChild(msg, bindTo=False)
self.sinkEvent("onKeyDown")
if closeable:
okBtn = Button(okLabel, callback=self.onOkBtnClick)
okBtn.addClass("btn--okay btn--primary")
self.popupFoot.appendChild(okBtn)
okBtn.focus()
def drop(self):
self.okCallback = None
self.close()
def onOkBtnClick(self, sender=None):
if self.okCallback:
self.okCallback(self)
self.drop()
def onKeyDown(self, event):
if html5.isReturn(event):
event.stopPropagation()
event.preventDefault()
self.onOkBtnClick()
class YesNoDialog(Popup):
def __init__(self, question, title=None, yesCallback=None, noCallback=None,
yesLabel="Yes", noLabel="No", icon="?",
closeable=False, *args, **kwargs):
super().__init__(title, closeable=closeable, icon=icon, *args, **kwargs)
self.addClass("popup--yesnodialog")
self.yesCallback = yesCallback
self.noCallback = noCallback
lbl = html5.Span()
lbl["class"].append("question")
self.popupBody.appendChild(lbl)
if isinstance(question, html5.Widget):
lbl.appendChild(question)
else:
utils.textToHtml(lbl, question)
if len(noLabel):
btnNo = Button(noLabel, className="btn--no", callback=self.onNoClicked)
#btnNo["class"].append("btn--no")
self.popupFoot.appendChild(btnNo)
btnYes = Button(yesLabel, callback=self.onYesClicked)
btnYes["class"].append("btn--yes")
self.popupFoot.appendChild(btnYes)
self.sinkEvent("onKeyDown")
btnYes.focus()
def onKeyDown(self, event):
if html5.isReturn(event):
event.stopPropagation()
event.preventDefault()
self.onYesClicked()
def onDocumentKeyDown(self, event):
if html5.isEscape(event):
event.stopPropagation()
event.preventDefault()
self.onNoClicked()
def drop(self):
self.yesCallback = None
self.noCallback = None
self.close()
def onYesClicked(self, *args, **kwargs):
if self.yesCallback:
self.yesCallback(self)
self.drop()
def onNoClicked(self, *args, **kwargs):
if self.noCallback:
self.noCallback(self)
self.drop()
class SelectDialog(Popup):
def __init__(self, prompt, items=None, title=None, okBtn="OK", cancelBtn="Cancel", forceSelect=False,
callback=None, *args, **kwargs):
super().__init__(title, *args, **kwargs)
self["class"].append("popup--selectdialog")
self.callback = callback
self.items = items
assert isinstance(self.items, list)
# Prompt
if prompt:
lbl = html5.Span()
lbl["class"].append("prompt")
if isinstance(prompt, html5.Widget):
lbl.appendChild(prompt)
else:
utils.textToHtml(lbl, prompt)
self.popupBody.appendChild(lbl)
# Items
if not forceSelect and len(items) <= 3:
for idx, item in enumerate(items):
if isinstance(item, dict):
title = item.get("title")
cssc = item.get("class")
elif isinstance(item, tuple):
title = item[1]
cssc = None
else:
title = item
btn = Button(title, callback=self.onAnyBtnClick)
btn.idx = idx
if cssc:
btn.addClass(cssc)
self.popupBody.appendChild(btn)
else:
self.select = html5.Select()
self.popupBody.appendChild(self.select)
for idx, item in enumerate(items):
if isinstance(item, dict):
title = item.get("title")
elif isinstance(item, tuple):
title = item[1]
else:
title = item
opt = html5.Option(title)
opt["value"] = str(idx)
self.select.appendChild(opt)
if okBtn:
self.popupFoot.appendChild(Button(okBtn, callback=self.onOkClick))
if cancelBtn:
self.popupFoot.appendChild(Button(cancelBtn, callback=self.onCancelClick))
def onAnyBtnClick(self, sender):
item = self.items[sender.idx]
if isinstance(item, dict) and item.get("callback") and callable(item["callback"]):
item["callback"](item)
if self.callback:
self.callback(item)
self.items = None
self.close()
def onCancelClick(self, sender=None):
self.close()
def onOkClick(self, sender=None):
assert self.select["selectedIndex"] >= 0
item = self.items[int(self.select.children(self.select["selectedIndex"])["value"])]
if isinstance(item, dict) and item.get("callback") and callable(item["callback"]):
item["callback"](item)
if self.callback:
self.callback(item)
self.items = None
self.select = None
self.close()
class TextareaDialog(Popup):
def __init__(self, text, value="", successHandler=None, abortHandler=None, successLbl="OK", abortLbl="Cancel",
*args, **kwargs):
super().__init__(*args, **kwargs)
self["class"].append("popup--textareadialog")
self.successHandler = successHandler
self.abortHandler = abortHandler
span = html5.Span()
span.element.innerHTML = text
self.popupBody.appendChild(span)
self.inputElem = html5.Textarea()
self.inputElem["value"] = value
self.popupBody.appendChild(self.inputElem)
okayBtn = Button(successLbl, self.onOkay)
okayBtn["class"].append("btn--okay")
self.popupFoot.appendChild(okayBtn)
cancelBtn = Button(abortLbl, self.onCancel)
cancelBtn["class"].append("btn--cancel")
self.popupFoot.appendChild(cancelBtn)
self.sinkEvent("onKeyDown")
self.inputElem.focus()
def onDocumentKeyDown(self, event):
if html5.isEscape(event):
event.stopPropagation()
event.preventDefault()
self.onCancel()
def onOkay(self, *args, **kwargs):
if self.successHandler:
self.successHandler(self, self.inputElem["value"])
self.close()
def onCancel(self, *args, **kwargs):
if self.abortHandler:
self.abortHandler(self, self.inputElem["value"])
self.close()