/* src/PNotifyHistory.html generated by Svelte v2.6.3 */
import PNotify from "./PNotify.js";

function data() {
  return Object.assign({
    '_notice': null, // The PNotify notice.
    '_options': {} // The options for the notice.
  }, PNotify.modules.History.defaults);
};

var methods = {
  initModule (options) {
    this.set(options);

    if (this.get().history) {
      // Don't destroy notices that are in history.
      const {_notice} = this.get();
      if (_notice.get().destroy) {
        _notice.set({'destroy': false});
      }
    }
  },

  beforeOpen () {
    const {maxInStack, _options} = this.get();
    if (maxInStack === Infinity) {
      return;
    }

    const stack = _options.stack;
    if (stack === false) {
      return;
    }

    // Remove oldest notifications leaving only maxInStack from the stack.
    if (PNotify.notices && (PNotify.notices.length > maxInStack)) {
      // Oldest are normally in front of array, or if stack.push=='top' then
      // they are at the end of the array!
      const top = stack.push === 'top';
      const forRemoval = [];
      let currentOpen = 0;

      for (let i = (top ? 0 : PNotify.notices.length - 1); (top ? i < PNotify.notices.length : i >= 0); (top ? i++ : i--)) {
        if (
          ['opening', 'open'].indexOf(PNotify.notices[i].get()._state) !== -1 &&
          PNotify.notices[i].get().stack === stack
        ) {
          if (currentOpen >= maxInStack) {
            forRemoval.push(PNotify.notices[i]);
          } else {
            currentOpen++;
          }
        }
      }

      for (let i = 0; i < forRemoval.length; i++) {
        forRemoval[i].close(false);
      }
    }
  }
};

function setup(Component) {
  Component.key = 'History';

  Component.defaults = {
    // Place the notice in the history.
    history: true,
    // Maximum number of notices to have open in its stack.
    maxInStack: Infinity
  };

  Component.init = (notice) => {
    return new Component({target: document.body});
  };

  Component.showLast = (stack) => {
    if (stack === undefined) {
      stack = PNotify.defaultStack;
    }
    if (stack === false) {
      return;
    }
    const top = (stack.push === 'top');

    // Look up the last history notice, and display it.
    let i = (top ? 0 : PNotify.notices.length - 1);

    let notice;
    do {
      notice = PNotify.notices[i];

      if (!notice) {
        return;
      }

      i += (top ? 1 : -1);
    } while (
      notice.get().stack !== stack ||
      !notice.get()._modules.History.get().history ||
      notice.get()._state === 'opening' ||
      notice.get()._state === 'open'
    );

    notice.open();
  };

  Component.showAll = (stack) => {
    if (stack === undefined) {
      stack = PNotify.defaultStack;
    }
    if (stack === false) {
      return;
    }

    // Display all notices. (Disregarding non-history notices.)
    for (let i = 0; i < PNotify.notices.length; i++) {
      const notice = PNotify.notices[i];
      if (
        (
          stack === true ||
          notice.get().stack === stack
        ) &&
        notice.get()._modules.History.get().history
      ) {
        notice.open();
      }
    }
  };

  // Register the module with PNotify.
  PNotify.modules.History = Component;
};

function create_main_fragment(component, ctx) {

	return {
		c: noop,

		m: noop,

		p: noop,

		d: noop
	};
}

function PNotifyHistory(options) {
	init(this, options);
	this._state = assign(data(), options.data);
	this._intro = true;

	this._fragment = create_main_fragment(this, this._state);

	if (options.target) {
		this._fragment.c();
		this._mount(options.target, options.anchor);
	}
}

assign(PNotifyHistory.prototype, {
 	destroy: destroy,
 	get: get,
 	fire: fire,
 	on: on,
 	set: set,
 	_set: _set,
 	_mount: _mount,
 	_differs: _differs
 });
assign(PNotifyHistory.prototype, methods);

PNotifyHistory.prototype._recompute = noop;

setup(PNotifyHistory);

function noop() {}

function init(component, options) {
	component._handlers = blankObject();
	component._bind = options._bind;

	component.options = options;
	component.root = options.root || component;
	component.store = component.root.store || options.store;
}

function assign(tar, src) {
	for (var k in src) tar[k] = src[k];
	return tar;
}

function destroy(detach) {
	this.destroy = noop;
	this.fire('destroy');
	this.set = noop;

	this._fragment.d(detach !== false);
	this._fragment = null;
	this._state = {};
}

function get() {
	return this._state;
}

function fire(eventName, data) {
	var handlers =
		eventName in this._handlers && this._handlers[eventName].slice();
	if (!handlers) return;

	for (var i = 0; i < handlers.length; i += 1) {
		var handler = handlers[i];

		if (!handler.__calling) {
			handler.__calling = true;
			handler.call(this, data);
			handler.__calling = false;
		}
	}
}

function on(eventName, handler) {
	var handlers = this._handlers[eventName] || (this._handlers[eventName] = []);
	handlers.push(handler);

	return {
		cancel: function() {
			var index = handlers.indexOf(handler);
			if (~index) handlers.splice(index, 1);
		}
	};
}

function set(newState) {
	this._set(assign({}, newState));
	if (this.root._lock) return;
	this.root._lock = true;
	callAll(this.root._beforecreate);
	callAll(this.root._oncreate);
	callAll(this.root._aftercreate);
	this.root._lock = false;
}

function _set(newState) {
	var oldState = this._state,
		changed = {},
		dirty = false;

	for (var key in newState) {
		if (this._differs(newState[key], oldState[key])) changed[key] = dirty = true;
	}
	if (!dirty) return;

	this._state = assign(assign({}, oldState), newState);
	this._recompute(changed, this._state);
	if (this._bind) this._bind(changed, this._state);

	if (this._fragment) {
		this.fire("state", { changed: changed, current: this._state, previous: oldState });
		this._fragment.p(changed, this._state);
		this.fire("update", { changed: changed, current: this._state, previous: oldState });
	}
}

function _mount(target, anchor) {
	this._fragment[this._fragment.i ? 'i' : 'm'](target, anchor || null);
}

function _differs(a, b) {
	return a != a ? b == b : a !== b || ((a && typeof a === 'object') || typeof a === 'function');
}

function blankObject() {
	return Object.create(null);
}

function callAll(fns) {
	while (fns && fns.length) fns.shift()();
}
export default PNotifyHistory;